diff --git a/GROUPS.md b/GROUPS.md
index 0aba2c7da..c65b2eb46 100644
--- a/GROUPS.md
+++ b/GROUPS.md
@@ -71,6 +71,7 @@ Please read <http://minecraft.gamepedia.com/Breaking> to learn how digging times
 * `coral_block=X`: Coral block (1 = alive, 2 = dead)
 * `coral_species=X`: Specifies the species of a coral; equal X means equal species
 * `set_on_fire=X`: Sets any (not fire-resistant) mob or player on fire for X seconds when touching
+* `compostability`: Amount from 1 to 100 that defines the percentage of likelyhood that the composter will advance a level.
 
 #### Footnotes
 
diff --git a/mods/ITEMS/mcl_cake/init.lua b/mods/ITEMS/mcl_cake/init.lua
index 104071064..6a7c1f6ca 100644
--- a/mods/ITEMS/mcl_cake/init.lua
+++ b/mods/ITEMS/mcl_cake/init.lua
@@ -1,149 +1,149 @@
---[[
-#!#!#!#Cake mod created by Jordan4ibanez#!#!#
-#!#!#!#Released under CC Attribution-ShareAlike 3.0 Unported #!#!#
-]]--
-
-local CAKE_HUNGER_POINTS = 2
-
-local S = minetest.get_translator(minetest.get_current_modname())
-
-local cake_texture = {"cake_top.png","cake_bottom.png","cake_inner.png","cake_side.png","cake_side.png","cake_side.png"}
-local slice_1 = { -7/16, -8/16, -7/16, -5/16, 0/16, 7/16}
-local slice_2 = { -7/16, -8/16, -7/16, -3/16, 0/16, 7/16}
-local slice_3 = { -7/16, -8/16, -7/16, -1/16, 0/16, 7/16}
-local slice_4 = { -7/16, -8/16, -7/16, 1/16, 0/16, 7/16}
-local slice_5 = { -7/16, -8/16, -7/16, 3/16, 0/16, 7/16}
-local slice_6 = { -7/16, -8/16, -7/16, 5/16, 0/16, 7/16}
-
-local full_cake = { -7/16, -8/16, -7/16, 7/16, 0/16, 7/16}
-
-minetest.register_craft({
-	output = "mcl_cake:cake",
-	recipe = {
-		{"mcl_mobitems:milk_bucket", "mcl_mobitems:milk_bucket", "mcl_mobitems:milk_bucket"},
-		{"mcl_core:sugar", "mcl_throwing:egg", "mcl_core:sugar"},
-		{"mcl_farming:wheat_item", "mcl_farming:wheat_item", "mcl_farming:wheat_item"},
-	},
-	replacements = {
-		{"mcl_mobitems:milk_bucket", "mcl_buckets:bucket_empty"},
-		{"mcl_mobitems:milk_bucket", "mcl_buckets:bucket_empty"},
-		{"mcl_mobitems:milk_bucket", "mcl_buckets:bucket_empty"},
-	},
-})
-
-minetest.register_node("mcl_cake:cake", {
-	description = S("Cake"),
-	_tt_help = S("With 7 tasty slices!").."\n"..S("Hunger points: +@1 per slice", CAKE_HUNGER_POINTS),
-	_doc_items_longdesc = S("Cakes can be placed and eaten to restore hunger points. A cake has 7 slices. Each slice restores 2 hunger points and 0.4 saturation points. Cakes will be destroyed when dug or when the block below them is broken."),
-	_doc_items_usagehelp = S("Place the cake anywhere, then rightclick it to eat a single slice. You can't eat from the cake when your hunger bar is full."),
-	tiles = {"cake_top.png","cake_bottom.png","cake_side.png","cake_side.png","cake_side.png","cake_side.png"},
-	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
-	inventory_image = "cake.png",
-	wield_image = "cake.png",
-	paramtype = "light",
-	is_ground_content = false,
-	drawtype = "nodebox",
-	selection_box = {
-		type = "fixed",
-		fixed = full_cake
-	},
-	node_box = {
-		type = "fixed",
-		fixed = full_cake
-	},
-	stack_max = 1,
-	groups = {handy=1, cake=7, food=2,no_eat_delay=1, attached_node=1, dig_by_piston=1, comparator_signal=14},
-	drop = "",
-	on_rightclick = function(pos, node, clicker, itemstack)
-		-- Cake is subject to protection
-		local name = clicker:get_player_name()
-		if minetest.is_protected(pos, name) then
-			minetest.record_protection_violation(pos, name)
-			return
-		end
-		local newcake = minetest.do_item_eat(2, ItemStack("mcl_cake:cake_6"), ItemStack("mcl_cake:cake"), clicker, {type="nothing"})
-		-- Check if we were allowed to eat
-		if newcake:get_name() ~= "mcl_cake:cake" or minetest.is_creative_enabled(clicker:get_player_name()) then
-			minetest.add_node(pos,{type="node",name="mcl_cake:cake_6",param2=0})
-		end
-	end,
-	sounds = mcl_sounds.node_sound_leaves_defaults(),
-
-	_food_particles = false,
-	_mcl_saturation = 0.4,
-	_mcl_blast_resistance = 0.5,
-	_mcl_hardness = 0.5,
-})
-
-local register_slice = function(level, nodebox, desc)
-	local this = "mcl_cake:cake_"..level
-	local after_eat = "mcl_cake:cake_"..(level-1)
-	local on_rightclick
-	if level > 1 then
-		on_rightclick = function(pos, node, clicker, itemstack)
-			local name = clicker:get_player_name()
-			if minetest.is_protected(pos, name) then
-				minetest.record_protection_violation(pos, name)
-				return
-			end
-			local newcake = minetest.do_item_eat(CAKE_HUNGER_POINTS, ItemStack(after_eat), ItemStack(this), clicker, {type="nothing"})
-			-- Check if we were allowed to eat
-			if newcake:get_name() ~= this or minetest.is_creative_enabled(clicker:get_player_name()) then
-				minetest.add_node(pos,{type="node",name=after_eat,param2=0})
-			end
-		end
-	else
-		-- Last slice
-		on_rightclick = function(pos, node, clicker, itemstack)
-			local name = clicker:get_player_name()
-			if minetest.is_protected(pos, name) then
-				minetest.record_protection_violation(pos, name)
-				return
-			end
-			local newcake = minetest.do_item_eat(CAKE_HUNGER_POINTS, ItemStack("mcl:cake:cake 0"), ItemStack("mcl_cake:cake_1"), clicker, {type="nothing"})
-			-- Check if we were allowed to eat
-			if newcake:get_name() ~= this or minetest.is_creative_enabled(clicker:get_player_name()) then
-				minetest.remove_node(pos)
-				minetest.check_for_falling(pos)
-			end
-		end
-	end
-
-	minetest.register_node(this, {
-		description = desc,
-		_doc_items_create_entry = false,
-		tiles = cake_texture,
-		use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
-		paramtype = "light",
-		is_ground_content = false,
-		drawtype = "nodebox",
-		selection_box = {
-			type = "fixed",
-			fixed = nodebox,
-		},
-		node_box = {
-			type = "fixed",
-			fixed = nodebox,
-			},
-		groups = {handy=1, cake=level, food=2,no_eat_delay=1,attached_node=1,not_in_creative_inventory=1,dig_by_piston=1,comparator_signal=level*2},
-		drop = "",
-		on_rightclick = on_rightclick,
-		sounds = mcl_sounds.node_sound_leaves_defaults(),
-
-		_food_particles = false,
-		_mcl_saturation = 0.4,
-		_mcl_blast_resistance = 0.5,
-		_mcl_hardness = 0.5,
-	})
-
-	if minetest.get_modpath("doc") then
-		doc.add_entry_alias("nodes", "mcl_cake:cake", "nodes", "mcl_cake:cake_"..level)
-	end
-end
-
-register_slice(6, slice_6, S("Cake (6 Slices Left)"))
-register_slice(5, slice_5, S("Cake (5 Slices Left)"))
-register_slice(4, slice_4, S("Cake (4 Slices Left)"))
-register_slice(3, slice_3, S("Cake (3 Slices Left)"))
-register_slice(2, slice_2, S("Cake (2 Slices Left)"))
-register_slice(1, slice_1, S("Cake (1 Slice Left)"))
+--[[
+#!#!#!#Cake mod created by Jordan4ibanez#!#!#
+#!#!#!#Released under CC Attribution-ShareAlike 3.0 Unported #!#!#
+]]--
+
+local CAKE_HUNGER_POINTS = 2
+
+local S = minetest.get_translator(minetest.get_current_modname())
+
+local cake_texture = {"cake_top.png","cake_bottom.png","cake_inner.png","cake_side.png","cake_side.png","cake_side.png"}
+local slice_1 = { -7/16, -8/16, -7/16, -5/16, 0/16, 7/16}
+local slice_2 = { -7/16, -8/16, -7/16, -3/16, 0/16, 7/16}
+local slice_3 = { -7/16, -8/16, -7/16, -1/16, 0/16, 7/16}
+local slice_4 = { -7/16, -8/16, -7/16, 1/16, 0/16, 7/16}
+local slice_5 = { -7/16, -8/16, -7/16, 3/16, 0/16, 7/16}
+local slice_6 = { -7/16, -8/16, -7/16, 5/16, 0/16, 7/16}
+
+local full_cake = { -7/16, -8/16, -7/16, 7/16, 0/16, 7/16}
+
+minetest.register_craft({
+	output = "mcl_cake:cake",
+	recipe = {
+		{"mcl_mobitems:milk_bucket", "mcl_mobitems:milk_bucket", "mcl_mobitems:milk_bucket"},
+		{"mcl_core:sugar", "mcl_throwing:egg", "mcl_core:sugar"},
+		{"mcl_farming:wheat_item", "mcl_farming:wheat_item", "mcl_farming:wheat_item"},
+	},
+	replacements = {
+		{"mcl_mobitems:milk_bucket", "mcl_buckets:bucket_empty"},
+		{"mcl_mobitems:milk_bucket", "mcl_buckets:bucket_empty"},
+		{"mcl_mobitems:milk_bucket", "mcl_buckets:bucket_empty"},
+	},
+})
+
+minetest.register_node("mcl_cake:cake", {
+	description = S("Cake"),
+	_tt_help = S("With 7 tasty slices!").."\n"..S("Hunger points: +@1 per slice", CAKE_HUNGER_POINTS),
+	_doc_items_longdesc = S("Cakes can be placed and eaten to restore hunger points. A cake has 7 slices. Each slice restores 2 hunger points and 0.4 saturation points. Cakes will be destroyed when dug or when the block below them is broken."),
+	_doc_items_usagehelp = S("Place the cake anywhere, then rightclick it to eat a single slice. You can't eat from the cake when your hunger bar is full."),
+	tiles = {"cake_top.png","cake_bottom.png","cake_side.png","cake_side.png","cake_side.png","cake_side.png"},
+	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
+	inventory_image = "cake.png",
+	wield_image = "cake.png",
+	paramtype = "light",
+	is_ground_content = false,
+	drawtype = "nodebox",
+	selection_box = {
+		type = "fixed",
+		fixed = full_cake
+	},
+	node_box = {
+		type = "fixed",
+		fixed = full_cake
+	},
+	stack_max = 1,
+	groups = {handy=1, cake=7, food=2, no_eat_delay=1, compostability=100, attached_node=1, dig_by_piston=1, comparator_signal=14},
+	drop = "",
+	on_rightclick = function(pos, node, clicker, itemstack)
+		-- Cake is subject to protection
+		local name = clicker:get_player_name()
+		if minetest.is_protected(pos, name) then
+			minetest.record_protection_violation(pos, name)
+			return
+		end
+		local newcake = minetest.do_item_eat(2, ItemStack("mcl_cake:cake_6"), ItemStack("mcl_cake:cake"), clicker, {type="nothing"})
+		-- Check if we were allowed to eat
+		if newcake:get_name() ~= "mcl_cake:cake" or minetest.is_creative_enabled(clicker:get_player_name()) then
+			minetest.add_node(pos,{type="node",name="mcl_cake:cake_6",param2=0})
+		end
+	end,
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+
+	_food_particles = false,
+	_mcl_saturation = 0.4,
+	_mcl_blast_resistance = 0.5,
+	_mcl_hardness = 0.5,
+})
+
+local register_slice = function(level, nodebox, desc)
+	local this = "mcl_cake:cake_"..level
+	local after_eat = "mcl_cake:cake_"..(level-1)
+	local on_rightclick
+	if level > 1 then
+		on_rightclick = function(pos, node, clicker, itemstack)
+			local name = clicker:get_player_name()
+			if minetest.is_protected(pos, name) then
+				minetest.record_protection_violation(pos, name)
+				return
+			end
+			local newcake = minetest.do_item_eat(CAKE_HUNGER_POINTS, ItemStack(after_eat), ItemStack(this), clicker, {type="nothing"})
+			-- Check if we were allowed to eat
+			if newcake:get_name() ~= this or minetest.is_creative_enabled(clicker:get_player_name()) then
+				minetest.add_node(pos,{type="node",name=after_eat,param2=0})
+			end
+		end
+	else
+		-- Last slice
+		on_rightclick = function(pos, node, clicker, itemstack)
+			local name = clicker:get_player_name()
+			if minetest.is_protected(pos, name) then
+				minetest.record_protection_violation(pos, name)
+				return
+			end
+			local newcake = minetest.do_item_eat(CAKE_HUNGER_POINTS, ItemStack("mcl:cake:cake 0"), ItemStack("mcl_cake:cake_1"), clicker, {type="nothing"})
+			-- Check if we were allowed to eat
+			if newcake:get_name() ~= this or minetest.is_creative_enabled(clicker:get_player_name()) then
+				minetest.remove_node(pos)
+				minetest.check_for_falling(pos)
+			end
+		end
+	end
+
+	minetest.register_node(this, {
+		description = desc,
+		_doc_items_create_entry = false,
+		tiles = cake_texture,
+		use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
+		paramtype = "light",
+		is_ground_content = false,
+		drawtype = "nodebox",
+		selection_box = {
+			type = "fixed",
+			fixed = nodebox,
+		},
+		node_box = {
+			type = "fixed",
+			fixed = nodebox,
+			},
+		groups = {handy=1, cake=level, food=2, no_eat_delay=1, compostability=100, attached_node=1, not_in_creative_inventory=1, dig_by_piston=1, comparator_signal=level*2},
+		drop = "",
+		on_rightclick = on_rightclick,
+		sounds = mcl_sounds.node_sound_leaves_defaults(),
+
+		_food_particles = false,
+		_mcl_saturation = 0.4,
+		_mcl_blast_resistance = 0.5,
+		_mcl_hardness = 0.5,
+	})
+
+	if minetest.get_modpath("doc") then
+		doc.add_entry_alias("nodes", "mcl_cake:cake", "nodes", "mcl_cake:cake_"..level)
+	end
+end
+
+register_slice(6, slice_6, S("Cake (6 Slices Left)"))
+register_slice(5, slice_5, S("Cake (5 Slices Left)"))
+register_slice(4, slice_4, S("Cake (4 Slices Left)"))
+register_slice(3, slice_3, S("Cake (3 Slices Left)"))
+register_slice(2, slice_2, S("Cake (2 Slices Left)"))
+register_slice(1, slice_1, S("Cake (1 Slice Left)"))
diff --git a/mods/ITEMS/mcl_composters/init.lua b/mods/ITEMS/mcl_composters/init.lua
index a3e219bb2..6c0450b2f 100644
--- a/mods/ITEMS/mcl_composters/init.lua
+++ b/mods/ITEMS/mcl_composters/init.lua
@@ -32,108 +32,6 @@ minetest.register_craft({
 	}
 })
 
-local compostability = {
-	["mcl_cake:cake"] = 100,
-	["mcl_farming:pumpkin_pie"] = 100,
-
-	["mcl_farming:potato_item_baked"] = 85,
-	["mcl_farming:bread"] = 85,
-	["mcl_farming:cookie"] = 85,
-	["mcl_farming:hay_block"] = 85,
-	-- mushroom cap block have 64 variants, wtf!?
-	["mcl_mushrooms:brown_mushroom_block_cap_111111"] = 85,
-	["mcl_mushrooms:red_mushroom_block_cap_111111"] = 85,
-	["mcl_nether:nether_wart_block"] = 85,
-	["mcl_mushroom:warped_wart_block"] = 85,
-
-	["mcl_core:apple"] = 65,
-	-- missing: azalea
-	["mcl_farming:beetroot_item"] = 65,
-	-- missing: big dripleaf
-	["mcl_farming:carrot_item"] = 65,
-	-- what's up with cocoa beans?
-	["mcl_dye:brown"] = 65,
-	["mcl_flowers:fern"] = 65,
-	["mcl_flowers:double_fern"] = 65,
-	["mcl_flowers:allium"] = 65,
-	["mcl_flowers:azure_bluet"] = 65,
-	["mcl_flowers:blue_orchid"] = 65,
-	["mcl_flowers:dandelion"] = 65,
-	["mcl_flowers:lilac"] = 65,
-	["mcl_flowers:oxeye_daisy"] = 65,
-	["mcl_flowers:poppy"] = 65,
-	["mcl_flowers:tulip_orange"] = 65,
-	["mcl_flowers:tulip_pink"] = 65,
-	["mcl_flowers:tulip_red"] = 65,
-	["mcl_flowers:tulip_white"] = 65,
-	["mcl_flowers:peony"] = 65,
-	["mcl_flowers:rose_bush"] = 65,
-	["mcl_flowers:sunflower"] = 65,
-	["mcl_flowers:waterlily"] = 65,
-	["mcl_farming:melon"] = 65,
-	["mcl_core:moss"] = 65,
-	-- mushroom aliases below?
-	["mcl_farming:mushroom_brown"] = 65,
-	["mcl_mushrooms:mushroom_brown"] = 65,
-	["mcl_farming:mushroom_red"] = 65,
-	["mcl_mushrooms:mushroom_red"] = 65,
-	["mcl_mushrooms:brown_mushroom_block_stem_full"] = 65,
-	["mcl_mushrooms:red_mushroom_block_stem_full"] = 65,
-	-- nether wart
-	["mcl_farming:potato_item"] = 65,
-	["mcl_farming:pumpkin"] = 65,
-	["mcl_farming:pumpkin_face_light"] = 65,
-	["mcl_ocean:sea_pickle_"] = 65,
-	["mcl_mushroom:shroomlight"] = 65,
-	-- missing: spore blossom
-	["mcl_farming:wheat_item"] = 65,
-	["mcl_mushroom:crimson_fungus"] = 65,
-	["mcl_mushroom:warped_fungus"] = 65,
-	["mcl_mushroom:crimson_roots"] = 65,
-	["mcl_mushroom:warped_roots"] = 65,
-
-	["mcl_core:cactus"] = 50,
-	["mcl_ocean:dried_kelp_block"] = 50,
-	-- missing: flowering azalea leaves
-	-- missing: glow lichen
-	["mcl_farming:melon_item"] = 50,
-	["mcl_mushroom:nether_sprouts"] = 50,
-	["mcl_core:reeds"] = 50,
-	["mcl_flowers:double_grass"] = 50,
-	["mcl_core:vine"] = 50,
-	-- missing: weeping vines
-	["mcl_mushroom:twisting_vines"] = 50,
-
-	["mcl_flowers:tallgrass"] = 30,
-	["mcl_farming:beetroot_seeds"] = 30,
-	["mcl_core:dirt_with_grass"] = 30,
-	["mcl_core:tallgrass"] = 30,
-	["mcl_ocean:dried_kelp"] = 30,
-	["mcl_ocean:kelp"] = 30,
-	["mcl_core:leaves"] = 30,
-	["mcl_core:acacialeaves"] = 30,
-	["mcl_core:birchleaves"] = 30,
-	["mcl_core:darkleaves"] = 30,
-	["mcl_core:jungleleaves"] = 30,
-	["mcl_core:spruceleaves"] = 30,
-	--
-	["mcl_farming:melon_seeds"] = 30,
-	["mcl_core:moss_carpet"] = 30,
-	["mcl_farming:pumpkin_seeds"] = 30,
-	["mcl_core:sapling"] = 30,
-	["mcl_core:acaciasapling"] = 30,
-	["mcl_core:birchsapling"] = 30,
-	["mcl_core:darksapling"] = 30,
-	["mcl_core:junglesapling"] = 30,
-	["mcl_core:sprucesapling"] = 30,
-	["mcl_ocean:seagrass"] = 30,
-	-- missing: small dripleaf
-	["mcl_sweet_berry:sweet_berry"] = 30,
-	["mcl_farming:sweet_berry"] = 30,
-	["mcl_farming:wheat_seeds"] = 30,
-
-}
-
 local function composter_add_item(pos, node, player, itemstack, pointed_thing)
 	--
 	-- handler for filling the composter when rightclicked
@@ -147,8 +45,9 @@ local function composter_add_item(pos, node, player, itemstack, pointed_thing)
 		return itemstack
 	end
 	local itemname = itemstack:get_name()
-	local chance = compostability[itemname]
-	if chance then
+	local chance = minetest.get_item_group(itemname, "compostability")
+
+	if chance > 0 then
 		if not minetest.is_creative_enabled(player:get_player_name()) then
 			itemstack:take_item()
 		end
diff --git a/mods/ITEMS/mcl_core/craftitems.lua b/mods/ITEMS/mcl_core/craftitems.lua
index 85a078766..26519ab7e 100644
--- a/mods/ITEMS/mcl_core/craftitems.lua
+++ b/mods/ITEMS/mcl_core/craftitems.lua
@@ -139,7 +139,7 @@ minetest.register_craftitem("mcl_core:apple", {
 	stack_max = 64,
 	on_place = minetest.item_eat(4),
 	on_secondary_use = minetest.item_eat(4),
-	groups = { food = 2, eatable = 4 },
+	groups = { food = 2, eatable = 4, compostability=65 },
 	_mcl_saturation = 2.4,
 })
 
diff --git a/mods/ITEMS/mcl_core/nodes_base.lua b/mods/ITEMS/mcl_core/nodes_base.lua
index 900675688..eed6ab906 100644
--- a/mods/ITEMS/mcl_core/nodes_base.lua
+++ b/mods/ITEMS/mcl_core/nodes_base.lua
@@ -369,7 +369,7 @@ minetest.register_node("mcl_core:dirt_with_grass", {
 	color = "#8EB971",
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {handy=1,shovely=1,dirt=2,grass_block=1, grass_block_no_snow=1, soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2, spreading_dirt_type=1, enderman_takable=1, building_block=1},
+	groups = {handy=1,shovely=1,dirt=2,grass_block=1, grass_block_no_snow=1, soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2, spreading_dirt_type=1, enderman_takable=1, building_block=1, compostability=30},
 	drop = "mcl_core:dirt",
 	sounds = mcl_sounds.node_sound_dirt_defaults({
 		footstep = {name="default_grass_footstep", gain=0.1},
@@ -473,7 +473,7 @@ minetest.register_node("mcl_core:moss", {
 	tiles = {"mcl_core_moss_block.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {handy=1, hoey=1},
+	groups = {handy=1, hoey=1, compostability=65},
 	--sounds = TODO: add sound
 	_mcl_blast_resistance = 0.1,
 	_mcl_hardness = 0.1,
@@ -1096,7 +1096,7 @@ minetest.register_node("mcl_core:moss", {
 	tiles = {"mcl_core_moss_block.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {handy=1, hoey=1},
+	groups = {handy=1, hoey=1, compostability=65},
 	--sounds = TODO: add sound
 	_mcl_blast_resistance = 0.1,
 	_mcl_hardness = 0.1,
@@ -1153,7 +1153,7 @@ minetest.register_node("mcl_core:moss_carpet", {
 			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16},
 		},
 	},
-	groups = {handy=1, hoey=1},
+	groups = {handy=1, hoey=1, compostability=30},
 	--sounds = TODO: add sound
 	_mcl_blast_resistance = 0.1,
 	_mcl_hardness = 0.1,
diff --git a/mods/ITEMS/mcl_core/nodes_cactuscane.lua b/mods/ITEMS/mcl_core/nodes_cactuscane.lua
index e61d6df80..cea73da11 100644
--- a/mods/ITEMS/mcl_core/nodes_cactuscane.lua
+++ b/mods/ITEMS/mcl_core/nodes_cactuscane.lua
@@ -12,7 +12,7 @@ minetest.register_node("mcl_core:cactus", {
 	tiles = {"mcl_core_cactus_top.png", "mcl_core_cactus_bottom.png", "mcl_core_cactus_side.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {handy=1, attached_node=1, plant=1, deco_block=1, dig_by_piston=1, enderman_takable=1},
+	groups = {handy=1, attached_node=1, plant=1, deco_block=1, dig_by_piston=1, enderman_takable=1, compostability=50},
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	paramtype = "light",
 	sunlight_propagates = true,
@@ -79,7 +79,7 @@ minetest.register_node("mcl_core:reeds", {
 		},
 	},
 	stack_max = 64,
-	groups = {dig_immediate=3, craftitem=1, deco_block=1, plant=1, non_mycelium_plant=1, dig_by_piston=1},
+	groups = {dig_immediate=3, craftitem=1, deco_block=1, plant=1, non_mycelium_plant=1, dig_by_piston=1, compostability=50},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	node_placement_prediction = "",
 	drop = "mcl_core:reeds", -- to prevent color inheritation
diff --git a/mods/ITEMS/mcl_core/nodes_climb.lua b/mods/ITEMS/mcl_core/nodes_climb.lua
index 9505bb19a..d99954e3f 100644
--- a/mods/ITEMS/mcl_core/nodes_climb.lua
+++ b/mods/ITEMS/mcl_core/nodes_climb.lua
@@ -104,7 +104,7 @@ minetest.register_node("mcl_core:vine", {
 		type = "wallmounted",
 	},
 	stack_max = 64,
-	groups = {handy=1,axey=1,shearsy=1,swordy=1, flammable=2,deco_block=1,destroy_by_lava_flow=1,dig_by_piston=1, fire_encouragement=15, fire_flammability=100},
+	groups = {handy=1,axey=1,shearsy=1,swordy=1, flammable=2,deco_block=1,destroy_by_lava_flow=1,dig_by_piston=1, fire_encouragement=15, fire_flammability=100, compostability=50},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	drop = "",
 	_mcl_shears_drop = true,
diff --git a/mods/ITEMS/mcl_core/nodes_trees.lua b/mods/ITEMS/mcl_core/nodes_trees.lua
index a5ef7aa97..060879e17 100644
--- a/mods/ITEMS/mcl_core/nodes_trees.lua
+++ b/mods/ITEMS/mcl_core/nodes_trees.lua
@@ -162,7 +162,8 @@ local function register_leaves(subname, description, longdesc, tiles, sapling, d
 			deco_block=1,
 			dig_by_piston=1,
 			fire_encouragement=30,
-			fire_flammability=60
+			fire_flammability=60,
+			compostability=30
 		},
 		drop = get_drops(0),
 		_mcl_shears_drop = true,
@@ -194,7 +195,7 @@ local function register_sapling(subname, description, longdesc, tt_help, texture
 			fixed = selbox
 		},
 		stack_max = 64,
-		groups = {dig_immediate=3, plant=1,sapling=1,non_mycelium_plant=1,attached_node=1,dig_by_water=1,dig_by_piston=1,destroy_by_lava_flow=1,deco_block=1},
+		groups = {dig_immediate=3, plant=1,sapling=1,non_mycelium_plant=1,attached_node=1,dig_by_water=1,dig_by_piston=1,destroy_by_lava_flow=1,deco_block=1, compostability=30},
 		sounds = mcl_sounds.node_sound_leaves_defaults(),
 		on_construct = function(pos)
 			local meta = minetest.get_meta(pos)
@@ -275,4 +276,4 @@ register_leaves("birchleaves", S("Birch Leaves"), S("Birch leaves are grown from
 -- Node aliases
 
 minetest.register_alias("default:acacia_tree", "mcl_core:acaciatree")
-minetest.register_alias("default:acacia_leaves", "mcl_core:acacialeaves")
\ No newline at end of file
+minetest.register_alias("default:acacia_leaves", "mcl_core:acacialeaves")
diff --git a/mods/ITEMS/mcl_dye/init.lua b/mods/ITEMS/mcl_dye/init.lua
index f5e282a8c..ca0ca6fe1 100644
--- a/mods/ITEMS/mcl_dye/init.lua
+++ b/mods/ITEMS/mcl_dye/init.lua
@@ -78,7 +78,7 @@ dyelocal.dyes = {
 	{"dark_green", "dye_dark_green",    S("Cactus Green"),{dye=1, craftitem=1, basecolor_green=1,   excolor_green=1,     unicolor_dark_green=1}},
 	{"green", "mcl_dye_lime",           S("Lime Dye"),     {dye=1, craftitem=1, basecolor_green=1,   excolor_green=1,     unicolor_green=1}},
 	{"yellow", "dye_yellow",            S("Dandelion Yellow"),    {dye=1, craftitem=1, basecolor_yellow=1,  excolor_yellow=1,    unicolor_yellow=1}},
-	{"brown", "mcl_dye_brown",          S("Cocoa Beans"),     {dye=1, craftitem=1, basecolor_brown=1,  excolor_orange=1,    unicolor_dark_orange=1}},
+	{"brown", "mcl_dye_brown",          S("Cocoa Beans"),     {dye=1, craftitem=1, basecolor_brown=1,  excolor_orange=1,    unicolor_dark_orange=1, compostability=65}},
 	{"orange", "dye_orange",            S("Orange Dye"),    {dye=1, craftitem=1, basecolor_orange=1,  excolor_orange=1,    unicolor_orange=1}},
 	{"red", "dye_red",                  S("Rose Red"),       {dye=1, craftitem=1, basecolor_red=1,     excolor_red=1,       unicolor_red=1}},
 	{"magenta", "dye_magenta",          S("Magenta Dye"),   {dye=1, craftitem=1, basecolor_magenta=1, excolor_red_violet=1,unicolor_red_violet=1}},
diff --git a/mods/ITEMS/mcl_farming/beetroot.lua b/mods/ITEMS/mcl_farming/beetroot.lua
index e312aa262..187f34eb4 100644
--- a/mods/ITEMS/mcl_farming/beetroot.lua
+++ b/mods/ITEMS/mcl_farming/beetroot.lua
@@ -5,7 +5,7 @@ minetest.register_craftitem("mcl_farming:beetroot_seeds", {
 	_tt_help = S("Grows on farmland"),
 	_doc_items_longdesc = S("Grows into a beetroot plant. Chickens like beetroot seeds."),
 	_doc_items_usagehelp = S("Place the beetroot seeds on farmland (which can be created with a hoe) to plant a beetroot plant. They grow in sunlight and grow faster on hydrated farmland. Rightclick an animal to feed it beetroot seeds."),
-	groups = { craftitem=1 },
+	groups = { craftitem=1, compostability=30 },
 	inventory_image = "mcl_farming_beetroot_seeds.png",
 	wield_image = "mcl_farming_beetroot_seeds.png",
 	on_place = function(itemstack, placer, pointed_thing)
@@ -133,7 +133,7 @@ minetest.register_craftitem("mcl_farming:beetroot_item", {
 	wield_image = "mcl_farming_beetroot.png",
 	on_place = minetest.item_eat(1),
 	on_secondary_use = minetest.item_eat(1),
-	groups = { food = 2, eatable = 1 },
+	groups = { food = 2, eatable = 1, compostability=65 },
 	_mcl_saturation = 1.2,
 })
 
diff --git a/mods/ITEMS/mcl_farming/carrots.lua b/mods/ITEMS/mcl_farming/carrots.lua
index 7983c58a2..bdecdefed 100644
--- a/mods/ITEMS/mcl_farming/carrots.lua
+++ b/mods/ITEMS/mcl_farming/carrots.lua
@@ -86,7 +86,7 @@ minetest.register_craftitem("mcl_farming:carrot_item", {
 	_doc_items_longdesc = S("Carrots can be eaten and planted. Pigs and rabbits like carrots."),
 	_doc_items_usagehelp = S("Hold it in your hand and rightclick to eat it. Place it on top of farmland to plant the carrot. It grows in sunlight and grows faster on hydrated farmland. Rightclick an animal to feed it."),
 	inventory_image = "farming_carrot.png",
-	groups = { food = 2, eatable = 3 },
+	groups = { food = 2, eatable = 3, compostability=65 },
 	_mcl_saturation = 3.6,
 	on_secondary_use = minetest.item_eat(3),
 	on_place = function(itemstack, placer, pointed_thing)
diff --git a/mods/ITEMS/mcl_farming/melon.lua b/mods/ITEMS/mcl_farming/melon.lua
index b3e49a61f..91df5d919 100644
--- a/mods/ITEMS/mcl_farming/melon.lua
+++ b/mods/ITEMS/mcl_farming/melon.lua
@@ -7,7 +7,7 @@ minetest.register_craftitem("mcl_farming:melon_seeds", {
 	_doc_items_longdesc = S("Grows into a melon stem which in turn grows melons. Chickens like melon seeds."),
 	_doc_items_usagehelp = S("Place the melon seeds on farmland (which can be created with a hoe) to plant a melon stem. Melon stems grow in sunlight and grow faster on hydrated farmland. When mature, the stem will attempt to grow a melon at the side. Rightclick an animal to feed it melon seeds."),
 	stack_max = 64,
-	groups = { craftitem=1 },
+	groups = { craftitem=1, compostability=30 },
 	inventory_image = "mcl_farming_melon_seeds.png",
 	on_place = function(itemstack, placer, pointed_thing)
 		return mcl_farming:place_seed(itemstack, placer, pointed_thing, "mcl_farming:melontige_1")
@@ -21,7 +21,7 @@ local melon_base_def = {
 	_doc_items_longdesc = S("A melon is a block which can be grown from melon stems, which in turn are grown from melon seeds. It can be harvested for melon slices."),
 	stack_max = 64,
 	tiles = {"farming_melon_top.png", "farming_melon_top.png", "farming_melon_side.png", "farming_melon_side.png", "farming_melon_side.png", "farming_melon_side.png"},
-	groups = {handy=1,axey=1, plant=1,building_block=1,enderman_takable=1,dig_by_piston=1},
+	groups = {handy=1,axey=1, plant=1,building_block=1,enderman_takable=1,dig_by_piston=1, compostability=65},
 	drop = {
 		max_items = 1,
 		items = {
@@ -134,7 +134,7 @@ minetest.register_craftitem("mcl_farming:melon_item", {
 	inventory_image = "farming_melon.png",
 	on_place = minetest.item_eat(2),
 	on_secondary_use = minetest.item_eat(2),
-	groups = { food = 2, eatable = 2 },
+	groups = { food = 2, eatable = 2, compostability=50 },
 	_mcl_saturation = 1.2,
 })
 
diff --git a/mods/ITEMS/mcl_farming/potatoes.lua b/mods/ITEMS/mcl_farming/potatoes.lua
index 79cd13115..a4f6a4360 100644
--- a/mods/ITEMS/mcl_farming/potatoes.lua
+++ b/mods/ITEMS/mcl_farming/potatoes.lua
@@ -91,7 +91,7 @@ minetest.register_craftitem("mcl_farming:potato_item", {
 	_doc_items_longdesc = S("Potatoes are food items which can be eaten, cooked in the furnace and planted. Pigs like potatoes."),
 	_doc_items_usagehelp = S("Hold it in your hand and rightclick to eat it. Place it on top of farmland to plant it. It grows in sunlight and grows faster on hydrated farmland. Rightclick an animal to feed it."),
 	inventory_image = "farming_potato.png",
-	groups = { food = 2, eatable = 1 },
+	groups = { food = 2, eatable = 1, compostability=65 },
 	_mcl_saturation = 0.6,
 	stack_max = 64,
 	on_secondary_use = minetest.item_eat(1),
@@ -112,7 +112,7 @@ minetest.register_craftitem("mcl_farming:potato_item_baked", {
 	inventory_image = "farming_potato_baked.png",
 	on_place = minetest.item_eat(5),
 	on_secondary_use = minetest.item_eat(5),
-	groups = { food = 2, eatable = 5 },
+	groups = { food = 2, eatable = 5, compostability = 85 },
 	_mcl_saturation = 6.0,
 })
 
diff --git a/mods/ITEMS/mcl_farming/pumpkin.lua b/mods/ITEMS/mcl_farming/pumpkin.lua
index 0eb71ac91..72d0057dc 100644
--- a/mods/ITEMS/mcl_farming/pumpkin.lua
+++ b/mods/ITEMS/mcl_farming/pumpkin.lua
@@ -15,7 +15,7 @@ minetest.register_craftitem("mcl_farming:pumpkin_seeds", {
 	_doc_items_usagehelp = S("Place the pumpkin seeds on farmland (which can be created with a hoe) to plant a pumpkin stem. Pumpkin stems grow in sunlight and grow faster on hydrated farmland. When mature, the stem attempts to grow a pumpkin next to it. Rightclick an animal to feed it pumpkin seeds."),
 	stack_max = 64,
 	inventory_image = "mcl_farming_pumpkin_seeds.png",
-	groups = { craftitem=1 },
+	groups = { craftitem=1, compostability=30 },
 	on_place = function(itemstack, placer, pointed_thing)
 		return mcl_farming:place_seed(itemstack, placer, pointed_thing, "mcl_farming:pumpkin_1")
 	end
@@ -99,7 +99,7 @@ local pumpkin_base_def = {
 	stack_max = 64,
 	paramtype2 = "facedir",
 	tiles = {"farming_pumpkin_top.png", "farming_pumpkin_top.png", "farming_pumpkin_side.png"},
-	groups = {handy=1,axey=1, plant=1,building_block=1, dig_by_piston=1, enderman_takable=1},
+	groups = {handy=1,axey=1, plant=1,building_block=1, dig_by_piston=1, enderman_takable=1, compostability=65},
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	on_rotate = on_rotate,
 	_mcl_blast_resistance = 1,
@@ -192,7 +192,7 @@ minetest.register_node("mcl_farming:pumpkin_face_light", {
 	paramtype2 = "facedir",
 	light_source = minetest.LIGHT_MAX,
 	tiles = {"farming_pumpkin_top.png", "farming_pumpkin_top.png", "farming_pumpkin_side.png", "farming_pumpkin_side.png", "farming_pumpkin_side.png", "farming_pumpkin_face_light.png"},
-	groups = {handy=1,axey=1, building_block=1, dig_by_piston=1 },
+	groups = {handy=1,axey=1, building_block=1, dig_by_piston=1, compostability=65 },
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	on_construct = function(pos)
 		-- Attempt to spawn iron golem or snow golem
@@ -230,7 +230,7 @@ minetest.register_craftitem("mcl_farming:pumpkin_pie", {
 	wield_image = "mcl_farming_pumpkin_pie.png",
 	on_place = minetest.item_eat(8),
 	on_secondary_use = minetest.item_eat(8),
-	groups = { food = 2, eatable = 8 },
+	groups = { food = 2, eatable = 8, compostability=100 },
 	_mcl_saturation = 4.8,
 })
 
diff --git a/mods/ITEMS/mcl_farming/sweet_berry.lua b/mods/ITEMS/mcl_farming/sweet_berry.lua
index d74739aaa..f215851e3 100644
--- a/mods/ITEMS/mcl_farming/sweet_berry.lua
+++ b/mods/ITEMS/mcl_farming/sweet_berry.lua
@@ -31,7 +31,7 @@ minetest.register_craftitem("mcl_farming:sweet_berry", {
 	inventory_image = "mcl_farming_sweet_berry.png",
 	_mcl_saturation = 0.2,
 	stack_max = 64,
-	groups = { food = 2, eatable = 1 },
+	groups = { food = 2, eatable = 1, compostability=30 },
 	on_secondary_use = minetest.item_eat(1),
 	on_place = function(itemstack, placer, pointed_thing)
 		local new = mcl_farming:place_seed(itemstack, placer, pointed_thing, "mcl_sweet_berry:sweet_berry_bush_0")
diff --git a/mods/ITEMS/mcl_farming/wheat.lua b/mods/ITEMS/mcl_farming/wheat.lua
index da1b84b2d..0e81f42bf 100644
--- a/mods/ITEMS/mcl_farming/wheat.lua
+++ b/mods/ITEMS/mcl_farming/wheat.lua
@@ -9,7 +9,7 @@ minetest.register_craftitem("mcl_farming:wheat_seeds", {
 		Place the wheat seeds on farmland (which can be created with a hoe) to plant a wheat plant.
 		They grow in sunlight and grow faster on hydrated farmland. Rightclick an animal to feed it wheat seeds.
 	]]),
-	groups = { craftitem=1 },
+	groups = { craftitem=1, compostability=30 },
 	inventory_image = "mcl_farming_wheat_seeds.png",
 	on_place = function(itemstack, placer, pointed_thing)
 		return mcl_farming:place_seed(itemstack, placer, pointed_thing, "mcl_farming:wheat_1")
@@ -104,7 +104,7 @@ minetest.register_craftitem("mcl_farming:wheat_item", {
 	_doc_items_longdesc = S("Wheat is used in crafting. Some animals like wheat."),
 	_doc_items_usagehelp = S("Use the “Place” key on an animal to try to feed it wheat."),
 	inventory_image = "farming_wheat_harvested.png",
-	groups = { craftitem = 1 },
+	groups = { craftitem = 1, compostability=65 },
 })
 
 minetest.register_craft({
@@ -125,7 +125,7 @@ minetest.register_craftitem("mcl_farming:cookie", {
 	description = S("Cookie"),
 	_doc_items_longdesc = S("This is a food item which can be eaten."),
 	inventory_image = "farming_cookie.png",
-	groups = {food=2, eatable=2},
+	groups = {food=2, eatable=2, compostability=85},
 	_mcl_saturation = 0.4,
 	on_place = minetest.item_eat(2),
 	on_secondary_use = minetest.item_eat(2),
@@ -136,7 +136,7 @@ minetest.register_craftitem("mcl_farming:bread", {
 	description = S("Bread"),
 	_doc_items_longdesc = S("This is a food item which can be eaten."),
 	inventory_image = "farming_bread.png",
-	groups = {food=2, eatable=5},
+	groups = {food=2, eatable=5, compostability=85},
 	_mcl_saturation = 6.0,
 	on_place = minetest.item_eat(5),
 	on_secondary_use = minetest.item_eat(5),
@@ -156,8 +156,7 @@ minetest.register_node("mcl_farming:hay_block", {
 	stack_max = 64,
 	paramtype2 = "facedir",
 	on_place = mcl_util.rotate_axis,
-	groups = {handy=1, hoey=1, flammable=2, fire_encouragement=60,
-		fire_flammability=20, building_block=1, fall_damage_add_percent=-80},
+	groups = {handy=1, hoey=1, compostability=85, flammable=2, fire_encouragement=60, fire_flammability=20, building_block=1, fall_damage_add_percent=-80},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	on_rotate = on_rotate,
 	_mcl_blast_resistance = 0.5,
diff --git a/mods/ITEMS/mcl_flowers/init.lua b/mods/ITEMS/mcl_flowers/init.lua
index 14e0df5cb..9c04ebcf5 100644
--- a/mods/ITEMS/mcl_flowers/init.lua
+++ b/mods/ITEMS/mcl_flowers/init.lua
@@ -80,7 +80,7 @@ function mcl_flowers.register_simple_flower(name, def)
 		walkable = false,
 		stack_max = 64,
 		drop = def.drop,
-		groups = {dig_immediate=3,flammable=2,fire_encouragement=60,fire_flammability=100,plant=1,flower=1,place_flowerlike=1,non_mycelium_plant=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1},
+		groups = {dig_immediate=3,flammable=2,fire_encouragement=60,fire_flammability=100,plant=1,flower=1,place_flowerlike=1,non_mycelium_plant=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1, compostability=65},
 		sounds = mcl_sounds.node_sound_leaves_defaults(),
 		node_placement_prediction = "",
 		on_place = on_place_flower,
@@ -143,7 +143,7 @@ local def_tallgrass = {
 	walkable = false,
 	buildable_to = true,
 	is_ground_content = true,
-	groups = {handy=1,shearsy=1, flammable=3,fire_encouragement=60,fire_flammability=100,attached_node=1,plant=1,place_flowerlike=2,non_mycelium_plant=1,dig_by_water=1,destroy_by_lava_flow=1,deco_block=1},
+	groups = {handy=1,shearsy=1, flammable=3,fire_encouragement=60,fire_flammability=100,attached_node=1,plant=1,place_flowerlike=2,non_mycelium_plant=1,dig_by_water=1,destroy_by_lava_flow=1,deco_block=1, compostability=30},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	drop = wheat_seed_drop,
 	_mcl_shears_drop = true,
@@ -163,6 +163,7 @@ def_fern._doc_items_longdesc = S("Ferns are small plants which occur naturally i
 def_fern.tiles = { "mcl_flowers_fern.png" }
 def_fern.inventory_image = "mcl_flowers_fern_inv.png"
 def_fern.wield_image = "mcl_flowers_fern_inv.png"
+def_fern.groups.compostability=65
 def_fern.selection_box = {
 	type = "fixed",
 	fixed = { -6/16, -0.5, -6/16, 6/16, 5/16, 6/16 },
@@ -205,6 +206,13 @@ local function add_large_plant(name, desc, longdesc, bottom_img, top_img, inv_im
 		bottom_groups.not_in_creative_inventory = 1
 		create_entry = false
 	end
+	-- some special cases for the composter group
+	if name == "double_fern" or "peony" or "rose_bush" or "lilac" or "sunflower" then
+		bottom_groups.compostability = 65
+	end
+	if name == "double_grass" then
+		bottom_groups.compostability = 50
+	end
 	-- Drop itself by default
 	local drop_bottom, drop_top
 	if not drop then
@@ -410,7 +418,7 @@ minetest.register_node("mcl_flowers:waterlily", {
 	liquids_pointable = true,
 	walkable = true,
 	sunlight_propagates = true,
-	groups = {dig_immediate = 3, plant=1, dig_by_water = 1,destroy_by_lava_flow=1, dig_by_piston = 1, deco_block=1, dig_by_boat=1},
+	groups = {dig_immediate = 3, plant=1, dig_by_water = 1,destroy_by_lava_flow=1, dig_by_piston = 1, deco_block=1, dig_by_boat=1, compostability=65},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	node_placement_prediction = "",
 	node_box = {
diff --git a/mods/ITEMS/mcl_mushroom/init.lua b/mods/ITEMS/mcl_mushroom/init.lua
index a1a2f45c2..9e44fdcf3 100644
--- a/mods/ITEMS/mcl_mushroom/init.lua
+++ b/mods/ITEMS/mcl_mushroom/init.lua
@@ -32,7 +32,7 @@ minetest.register_node("mcl_mushroom:warped_fungus", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	walkable = false,
-	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1},
+	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, compostability=65},
 
 	light_source = 1,
 	selection_box = {
@@ -67,7 +67,7 @@ minetest.register_node("mcl_mushroom:twisting_vines", {
 	walkable = false,
 	climbable = true,
 	buildable_to = true,
-	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1},
+	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1, compostability=50},
 	selection_box = {
 		type = "fixed",
 		fixed = { -3/16, -0.5, -3/16, 3/16, 0.5, 3/16 },
@@ -108,7 +108,7 @@ minetest.register_node("mcl_mushroom:nether_sprouts", {
 	paramtype = "light",
 	walkable = false,
 	buildable_to = true,
-	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1},
+	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1, compostability=50},
 	selection_box = {
 		type = "fixed",
 		fixed = { -4/16, -0.5, -4/16, 4/16, 0, 4/16 },
@@ -130,7 +130,7 @@ minetest.register_node("mcl_mushroom:warped_roots", {
 	paramtype = "light",
 	walkable = false,
 	buildable_to = true,
-	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1},
+	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1, compostability=65},
 	selection_box = {
 		type = "fixed",
 		fixed = { -6/16, -0.5, -6/16, 6/16, -4/16, 6/16 },
@@ -144,7 +144,7 @@ minetest.register_node("mcl_mushroom:warped_roots", {
 minetest.register_node("mcl_mushroom:warped_wart_block", {
   description = S("Warped Wart Block"),
   tiles = {"warped_wart_block.png"},
-  groups = {handy=1,hoe=7,swordy=1, deco_block=1, },
+  groups = {handy=1,hoe=7,swordy=1, compostability=85, deco_block=1, },
   stack_max = 64,
   _mcl_hardness = 2,
 })
@@ -152,7 +152,7 @@ minetest.register_node("mcl_mushroom:warped_wart_block", {
 minetest.register_node("mcl_mushroom:shroomlight", {
   description = S("Shroomlight"),
   tiles = {"shroomlight.png"},
-  groups = {handy=1,hoe=7,swordy=1, leaves=1, deco_block=1, },
+  groups = {handy=1,hoe=7,swordy=1, leaves=1, deco_block=1, compostability=65, },
   stack_max = 64,
   _mcl_hardness = 2,
   -- this is 15 in Minecraft
@@ -305,7 +305,7 @@ minetest.register_node("mcl_mushroom:crimson_fungus", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	walkable = false,
-	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1},
+	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1, compostability=65},
 
 	light_source = 1,
 	selection_box = {
@@ -339,7 +339,7 @@ minetest.register_node("mcl_mushroom:crimson_roots", {
 	paramtype = "light",
 	walkable = false,
 	buildable_to = true,
-	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1},
+	groups = {dig_immediate=3,vines=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,deco_block=1, shearsy = 1, compostability=65},
 	selection_box = {
 		type = "fixed",
 		fixed = { -6/16, -0.5, -6/16, 6/16, -4/16, 6/16 },
diff --git a/mods/ITEMS/mcl_mushrooms/huge.lua b/mods/ITEMS/mcl_mushrooms/huge.lua
index 617f12810..83bc6a910 100644
--- a/mods/ITEMS/mcl_mushrooms/huge.lua
+++ b/mods/ITEMS/mcl_mushrooms/huge.lua
@@ -3,7 +3,7 @@ local S = minetest.get_translator(minetest.get_current_modname())
 local vector = vector
 
 local template = {
-	groups = {handy=1,axey=1, building_block = 1, material_wood = 1, flammable = -1 },
+	groups = {handy=1,axey=1, building_block = 1, material_wood = 1, flammable = -1, compostability=85 },
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	is_ground_content = true,
 	_mcl_blast_resistance = 0.2,
@@ -51,6 +51,7 @@ local function register_mushroom(color, species_id, template, d_cap, d_stem, d_s
 	stem_full.tiles = { "mcl_mushrooms_mushroom_block_skin_stem.png" }
 	stem_full.groups.huge_mushroom = species_id
 	stem_full.groups.huge_mushroom_stem = 2
+	stem_full.groups.compostability=65
 	minetest.register_node("mcl_mushrooms:"..color.."_mushroom_block_stem_full", stem_full)
 
 	-- Stem
@@ -60,6 +61,7 @@ local function register_mushroom(color, species_id, template, d_cap, d_stem, d_s
 	stem.tiles = { "mcl_mushrooms_mushroom_block_inside.png", "mcl_mushrooms_mushroom_block_inside.png", "mcl_mushrooms_mushroom_block_skin_stem.png" }
 	stem.groups.huge_mushroom = species_id
 	stem.groups.huge_mushroom_stem = 1
+	stem.groups.compostability=65
 	minetest.register_node("mcl_mushrooms:"..color.."_mushroom_block_stem", stem)
 
 	-- Mushroom block (cap)
diff --git a/mods/ITEMS/mcl_mushrooms/small.lua b/mods/ITEMS/mcl_mushrooms/small.lua
index c6d7edcdc..6fdc80c16 100644
--- a/mods/ITEMS/mcl_mushrooms/small.lua
+++ b/mods/ITEMS/mcl_mushrooms/small.lua
@@ -38,7 +38,7 @@ minetest.register_node("mcl_mushrooms:mushroom_brown", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	walkable = false,
-	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1},
+	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1, compostability=65},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	light_source = 1,
 	selection_box = {
@@ -62,7 +62,7 @@ minetest.register_node("mcl_mushrooms:mushroom_red", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	walkable = false,
-	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1},
+	groups = {dig_immediate=3,mushroom=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,dig_by_piston=1,enderman_takable=1,deco_block=1, compostability=65},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	selection_box = {
 		type = "fixed",
diff --git a/mods/ITEMS/mcl_nether/init.lua b/mods/ITEMS/mcl_nether/init.lua
index 2d6fbcecc..35da05553 100644
--- a/mods/ITEMS/mcl_nether/init.lua
+++ b/mods/ITEMS/mcl_nether/init.lua
@@ -202,7 +202,7 @@ minetest.register_node("mcl_nether:nether_wart_block", {
 	stack_max = 64,
 	tiles = {"mcl_nether_nether_wart_block.png"},
 	is_ground_content = false,
-	groups = {handy=1, hoey=1, building_block=1},
+	groups = {handy=1, hoey=1, building_block=1, compostability=85},
 	sounds = mcl_sounds.node_sound_leaves_defaults(
 		{
 			footstep={name="default_dirt_footstep", gain=0.7},
diff --git a/mods/ITEMS/mcl_nether/nether_wart.lua b/mods/ITEMS/mcl_nether/nether_wart.lua
index 90af6bdd6..e7452a211 100644
--- a/mods/ITEMS/mcl_nether/nether_wart.lua
+++ b/mods/ITEMS/mcl_nether/nether_wart.lua
@@ -150,7 +150,7 @@ minetest.register_craftitem("mcl_nether:nether_wart_item", {
 			end
 		end
 	end,
-	groups = { craftitem = 1, brewitem=1 },
+	groups = { craftitem = 1, brewitem=1, compostability=30 },
 })
 
 local names = {"mcl_nether:nether_wart_0", "mcl_nether:nether_wart_1", "mcl_nether:nether_wart_2"}
diff --git a/mods/ITEMS/mcl_ocean/kelp.lua b/mods/ITEMS/mcl_ocean/kelp.lua
index 422f475ac..fbdb12448 100644
--- a/mods/ITEMS/mcl_ocean/kelp.lua
+++ b/mods/ITEMS/mcl_ocean/kelp.lua
@@ -741,7 +741,7 @@ minetest.register_craftitem("mcl_ocean:kelp", {
 	inventory_image = "mcl_ocean_kelp_item.png",
 	wield_image = "mcl_ocean_kelp_item.png",
 	on_place = kelp.kelp_on_place,
-	groups = { deco_block = 1 },
+	groups = { deco_block = 1, compostability=30 },
 })
 
 if mod_doc then
@@ -756,7 +756,7 @@ minetest.register_craftitem("mcl_ocean:dried_kelp", {
 	_doc_items_longdesc = S("Dried kelp is a food item."),
 	inventory_image = "mcl_ocean_dried_kelp.png",
 	wield_image = "mcl_ocean_dried_kelp.png",
-	groups = { food = 2, eatable = 1 },
+	groups = { food = 2, eatable = 1, compostability=30 },
 	on_place = minetest.item_eat(1),
 	on_secondary_use = minetest.item_eat(1),
 	_mcl_saturation = 0.6,
@@ -773,7 +773,7 @@ minetest.register_node("mcl_ocean:dried_kelp_block", {
 	description = S("Dried Kelp Block"),
 	_doc_items_longdesc = S("A decorative block that serves as a great furnace fuel."),
 	tiles = { "mcl_ocean_dried_kelp_top.png", "mcl_ocean_dried_kelp_bottom.png", "mcl_ocean_dried_kelp_side.png" },
-	groups = { handy = 1, hoey = 1, building_block = 1, flammable = 2, fire_encouragement = 30, fire_flammability = 60 },
+	groups = { handy = 1, hoey = 1, building_block = 1, flammable = 2, fire_encouragement = 30, fire_flammability = 60, compostability=50 },
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	paramtype2 = "facedir",
 	on_place = mcl_util.rotate_axis,
diff --git a/mods/ITEMS/mcl_ocean/sea_pickle.lua b/mods/ITEMS/mcl_ocean/sea_pickle.lua
index d215fd3b3..435dc10f0 100644
--- a/mods/ITEMS/mcl_ocean/sea_pickle.lua
+++ b/mods/ITEMS/mcl_ocean/sea_pickle.lua
@@ -106,7 +106,7 @@ for s=1,4 do
 		},
 		inventory_image = img,
 		wield_image = img,
-		groups = { dig_immediate = 3, deco_block = 1, sea_pickle=1, not_in_creative_inventory=nici },
+		groups = { dig_immediate = 3, deco_block = 1, sea_pickle=1, not_in_creative_inventory=nici, compostability=65 },
 		-- Light level: 6 at size 1, +3 for each additional stage
 		light_source = math.min(6 + (s-1)*3, minetest.LIGHT_MAX),
 		selection_box = {
diff --git a/mods/ITEMS/mcl_ocean/seagrass.lua b/mods/ITEMS/mcl_ocean/seagrass.lua
index 5fd382775..52c506f81 100644
--- a/mods/ITEMS/mcl_ocean/seagrass.lua
+++ b/mods/ITEMS/mcl_ocean/seagrass.lua
@@ -85,7 +85,7 @@ minetest.register_craftitem("mcl_ocean:seagrass", {
 	inventory_image = "mcl_ocean_seagrass.png^[verticalframe:12:0",
 	wield_image = "mcl_ocean_seagrass.png^[verticalframe:12:0",
 	on_place = seagrass_on_place,
-	groups = { deco_block = 1 },
+	groups = { deco_block = 1, compostability=30 },
 })
 
 -- Seagrass nodes: seagrass on a surface node