diff --git a/GROUPS.md b/GROUPS.md
index 8ff75bbda..b2c009b47 100644
--- a/GROUPS.md
+++ b/GROUPS.md
@@ -72,6 +72,7 @@ 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=X`: Item can be used on a composter block; X (1-100) is the % chance of adding a level of compost
 
 #### Footnotes
 
diff --git a/mods/ITEMS/mcl_cake/init.lua b/mods/ITEMS/mcl_cake/init.lua
index 104071064..f3a69f413 100644
--- a/mods/ITEMS/mcl_cake/init.lua
+++ b/mods/ITEMS/mcl_cake/init.lua
@@ -52,7 +52,10 @@ minetest.register_node("mcl_cake:cake", {
 		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},
+	groups = {
+		handy = 1, attached_node = 1, dig_by_piston = 1, comparator_signal = 14,
+		cake = 7, food = 2, no_eat_delay = 1, compostability = 100
+	},
 	drop = "",
 	on_rightclick = function(pos, node, clicker, itemstack)
 		-- Cake is subject to protection
@@ -125,7 +128,11 @@ local register_slice = function(level, nodebox, desc)
 			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},
+		groups = {
+			handy = 1, attached_node = 1, not_in_creative_inventory = 1,
+			dig_by_piston = 1, cake = level, comparator_signal = level * 2,
+			food = 2, no_eat_delay = 1
+		},
 		drop = "",
 		on_rightclick = on_rightclick,
 		sounds = mcl_sounds.node_sound_leaves_defaults(),
diff --git a/mods/ITEMS/mcl_composters/init.lua b/mods/ITEMS/mcl_composters/init.lua
index 18cd992dc..56422d8b5 100644
--- a/mods/ITEMS/mcl_composters/init.lua
+++ b/mods/ITEMS/mcl_composters/init.lua
@@ -38,134 +38,52 @@ minetest.register_craft({
 	burntime = 15,
 })
 
-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,
-	-- missing: moss block?
-	-- 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,
-	-- missing: moss carpet
-	["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 get_item_group = minetest.get_item_group
+local is_creative_enabled = minetest.is_creative_enabled
+local registered_nodes = minetest.registered_nodes
+local swap_node = minetest.swap_node
+local get_node_timer = minetest.get_node_timer
+local add_item = minetest.add_item
+local vector_offset = vector.offset
+local is_protected = minetest.is_protected
+local record_protection_violation = minetest.record_protection_violation
 
+--- Fill the composter when rightclicked.
+--
+-- `on_rightclick` handler for composter blocks of all fill levels except
+-- for the "ready" composter (see: composter_harvest).
+-- If the item used on the composter block is compostable, there is a chance
+-- that the level of the composter may increase, depending on the value of
+-- compostability of the item.
+--
+-- parameters are the standard parameters passed to `on_rightclick`.
+-- returns the remaining itemstack.
+--
 local function composter_add_item(pos, node, player, itemstack, pointed_thing)
-	--
-	-- handler for filling the composter when rightclicked
-	--
-	-- as an on_rightclick handler, it returns an itemstack
-	--
 	if not player or (player:get_player_control() and player:get_player_control().sneak) then
 		return itemstack
 	end
-	if not itemstack and itemstack:is_empty() then
+	local name = player:get_player_name()
+	if is_protected(pos, name) then
+		record_protection_violation(pos, name)
+		return itemstack
+	end
+	if not itemstack or itemstack:is_empty() then
 		return itemstack
 	end
 	local itemname = itemstack:get_name()
-	local chance = compostability[itemname]
-	if chance then
-		if not minetest.is_creative_enabled(player:get_player_name()) then
+	local chance = get_item_group(itemname, "compostability")
+	if chance > 0 then
+		if not is_creative_enabled(player:get_player_name()) then
 			itemstack:take_item()
 		end
 		-- calculate leveling up chance
 		local rand = math.random(0,100)
 		if chance >= rand then
 			-- get current compost level
-			local node_defs = minetest.registered_nodes[node.name]
-			local level = node_defs["_mcl_compost_level"]
+			local level = registered_nodes[node.name]["_mcl_compost_level"]
 			-- spawn green particles above new layer
-			mcl_dye.add_bone_meal_particle(vector.add(pos, vector.new(0, level/8, 0)))
+			mcl_dye.add_bone_meal_particle(vector_offset(pos, 0, level/8, 0))
 			-- TODO: play some sounds
 			-- update composter block
 			if level < 7 then
@@ -173,11 +91,11 @@ local function composter_add_item(pos, node, player, itemstack, pointed_thing)
 			else
 				level = "ready"
 			end
-			minetest.swap_node(pos, {name = "mcl_composters:composter_" .. level})
+			swap_node(pos, {name = "mcl_composters:composter_" .. level})
 			-- a full composter becomes ready for harvest after one second
 			-- the block will get updated by the node timer callback set in node reg def
 			if level == 7 then
-				local timer = minetest.get_node_timer(pos)
+				local timer = get_node_timer(pos)
 				timer:start(1)
 			end
 		end
@@ -185,39 +103,53 @@ local function composter_add_item(pos, node, player, itemstack, pointed_thing)
 	return itemstack
 end
 
+--- Update a full composter block to ready for harvesting.
+--
+-- `on_timer` handler. The timer is set in function 'composter_add_item'
+-- when the composter level has reached 7.
+--
+-- pos: position of the composter block.
+-- returns false, thereby cancelling further activity of the timer.
+--
 local function composter_ready(pos)
-	--
-	-- update the composter block to ready for harvesting
-	-- this function is a node callback on_timer.
-	-- the timer is set in function 'composter_fill' when composter level is 7
-	--
-	-- returns false in order to cancel further activity of the timer
-	--
-	minetest.swap_node(pos, {name = "mcl_composters:composter_ready"})
+	swap_node(pos, {name = "mcl_composters:composter_ready"})
 	-- maybe spawn particles again?
 	-- TODO: play some sounds
 	return false
 end
 
+--- Spawn bone meal item and reset composter block.
+--
+-- `on_rightclick` handler for the "ready" composter block.  Causes a
+-- bone meal item to be spawned from the composter and resets the
+-- composter block to an empty composter block.
+--
+-- parameterss are the standard parameters passed to `on_rightclick`.
+-- returns itemstack (unchanged in this function).
+--
 local function composter_harvest(pos, node, player, itemstack, pointed_thing)
-	--
-	-- handler for harvesting bone meal from a ready composter when rightclicked
-	--
 	if not player or (player:get_player_control() and player:get_player_control().sneak) then
-		return
+		return itemstack
+	end
+	local name = player:get_player_name()
+	if is_protected(pos, name) then
+		record_protection_violation(pos, name)
+		return itemstack
 	end
 	-- reset ready type composter to empty type
-	minetest.swap_node(pos, {name="mcl_composters:composter"})
+	swap_node(pos, {name="mcl_composters:composter"})
 	-- spawn bone meal item (wtf dye?! is this how they make white cocoa)
-	minetest.add_item(pos, "mcl_dye:white")
+	add_item(pos, "mcl_dye:white")
 	-- TODO play some sounds
-
+	return itemstack
 end
 
+--- Construct composter nodeboxes with varying levels of compost.
+--
+-- level: compost level in the composter
+-- returns a nodebox definition table.
+--
 local function composter_get_nodeboxes(level)
-	--
-	-- Convenience function to construct the nodeboxes for varying levels of compost
-	--
 	local top_y_tbl = {[0]=-7, -5, -3, -1, 1, 3, 5, 7}
 	local top_y = top_y_tbl[level] / 16
 	return {
@@ -232,9 +164,9 @@ local function composter_get_nodeboxes(level)
 	}
 end
 
+--- Register empty composter node.
 --
--- Register empty composter node
--- This is the base model that is craftable and can be placed in an inventory
+-- This is the craftable base model that can be placed in an inventory.
 --
 minetest.register_node("mcl_composters:composter", {
 	description = composter_description,
@@ -250,7 +182,6 @@ minetest.register_node("mcl_composters:composter", {
 		"mcl_composter_bottom.png",
 		"mcl_composter_side.png"
 	},
-	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
 	is_ground_content = false,
 	groups = {
 		handy=1, material_wood=1, deco_block=1, dirtifier=1,
@@ -263,9 +194,9 @@ minetest.register_node("mcl_composters:composter", {
 	on_rightclick = composter_add_item
 })
 
+--- Template function for composters with compost.
 --
--- Template function for composters with compost
--- For each fill level a custom node is registered
+-- For each fill level a custom node is registered.
 --
 local function register_filled_composter(level)
 	local id = "mcl_composters:composter_"..level
@@ -281,7 +212,6 @@ local function register_filled_composter(level)
 			"mcl_composter_bottom.png",
 			"mcl_composter_side.png"
 		},
-		use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
 		is_ground_content = false,
 		groups = {
 			handy=1, material_wood=1, deco_block=1, dirtifier=1,
@@ -304,20 +234,17 @@ local function register_filled_composter(level)
 	end
 end
 
---
--- Register filled composters (7 levels)
+--- Register filled composters (7 levels).
 --
 for level = 1, 7 do
 	register_filled_composter(level)
 end
 
---
--- Register composter ready to be harvested
+--- Register composter that is ready to be harvested.
 --
 minetest.register_node("mcl_composters:composter_ready", {
 	description = S("Composter") .. "(" .. S("ready for harvest") .. ")",
 	_doc_items_create_entry = false,
-	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
 	paramtype = "light",
 	drawtype = "nodebox",
 	node_box = composter_get_nodeboxes(7),
@@ -344,6 +271,6 @@ minetest.register_node("mcl_composters:composter_ready", {
 
 -- Add entry aliases for the Help
 if minetest.get_modpath("doc") then
-	doc.add_entry_alias("nodes", "mcl_composters:composter", 
+	doc.add_entry_alias("nodes", "mcl_composters:composter",
 		"nodes", "mcl_composters:composter_ready" )
 end
diff --git a/mods/ITEMS/mcl_core/craftitems.lua b/mods/ITEMS/mcl_core/craftitems.lua
index 85a078766..fc84c50f5 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 fe1ee58c2..b4edc5045 100644
--- a/mods/ITEMS/mcl_core/nodes_base.lua
+++ b/mods/ITEMS/mcl_core/nodes_base.lua
@@ -368,7 +368,12 @@ 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},
diff --git a/mods/ITEMS/mcl_core/nodes_cactuscane.lua b/mods/ITEMS/mcl_core/nodes_cactuscane.lua
index 9c46c3323..62d5cc2b5 100644
--- a/mods/ITEMS/mcl_core/nodes_cactuscane.lua
+++ b/mods/ITEMS/mcl_core/nodes_cactuscane.lua
@@ -12,7 +12,10 @@ 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, deco_block = 1, dig_by_piston = 1,
+		plant = 1, enderman_takable = 1, compostability = 50
+	},
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	paramtype = "light",
 	sunlight_propagates = true,
@@ -79,7 +82,10 @@ 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, dig_by_piston = 1,
+		plant = 1, non_mycelium_plant = 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..1a6780618 100644
--- a/mods/ITEMS/mcl_core/nodes_climb.lua
+++ b/mods/ITEMS/mcl_core/nodes_climb.lua
@@ -104,7 +104,11 @@ 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, deco_block = 1,
+		dig_by_piston = 1, destroy_by_lava_flow = 1, compostability = 50,
+		flammable = 2, fire_encouragement = 15, fire_flammability = 100
+	},
 	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..e4903958e 100644
--- a/mods/ITEMS/mcl_core/nodes_trees.lua
+++ b/mods/ITEMS/mcl_core/nodes_trees.lua
@@ -152,17 +152,10 @@ local function register_leaves(subname, description, longdesc, tiles, sapling, d
 		paramtype = "light",
 		stack_max = 64,
 		groups = {
-			handy=1,
-			hoey=1,
-			shearsy=1,
-			swordy=1,
-			leafdecay=leafdecay_distance,
-			flammable=2,
-			leaves=1,
-			deco_block=1,
-			dig_by_piston=1,
-			fire_encouragement=30,
-			fire_flammability=60
+			handy = 1, hoey = 1, shearsy = 1, swordy = 1, dig_by_piston = 1,
+			leaves = 1, leafdecay = leafdecay_distance, deco_block = 1,
+			flammable = 2, fire_encouragement = 30, fire_flammability = 60,
+			compostability = 30
 		},
 		drop = get_drops(0),
 		_mcl_shears_drop = true,
@@ -194,7 +187,11 @@ 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 = {
+			plant = 1, sapling = 1, non_mycelium_plant = 1, attached_node = 1,
+			deco_block = 1, dig_immediate = 3, dig_by_water = 1, dig_by_piston = 1,
+			destroy_by_lava_flow = 1, compostability = 30
+		},
 		sounds = mcl_sounds.node_sound_leaves_defaults(),
 		on_construct = function(pos)
 			local meta = minetest.get_meta(pos)
@@ -275,4 +272,4 @@ 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 dfb962446..727a78460 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}},
@@ -561,5 +561,3 @@ minetest.register_craft({
 	output = "mcl_dye:white 3",
 	recipe = {{"mcl_mobitems:bone"}},
 })
-
-
diff --git a/mods/ITEMS/mcl_farming/beetroot.lua b/mods/ITEMS/mcl_farming/beetroot.lua
index e312aa262..21096042b 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..1c3ebcdfa 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..6bbc507ec 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 +21,10 @@ 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, dig_by_piston = 1,
+		enderman_takable = 1, compostability = 65
+	},
 	drop = {
 		max_items = 1,
 		items = {
@@ -134,7 +137,7 @@ 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..04a971de8 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..a38f11862 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 +99,10 @@ 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,
@@ -230,7 +233,7 @@ 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/wheat.lua b/mods/ITEMS/mcl_farming/wheat.lua
index da1b84b2d..a254ed36c 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 +156,11 @@ 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, building_block = 1, fall_damage_add_percent = -80,
+		flammable = 2, fire_encouragement = 60, fire_flammability = 20,
+		compostability = 85
+	},
 	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..d5112a36d 100644
--- a/mods/ITEMS/mcl_flowers/init.lua
+++ b/mods/ITEMS/mcl_flowers/init.lua
@@ -80,7 +80,13 @@ 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 = {
+			attached_node = 1, deco_block = 1, dig_by_piston = 1, dig_immediate = 3,
+			dig_by_water = 1, destroy_by_lava_flow = 1, enderman_takable = 1,
+			plant = 1, flower = 1, place_flowerlike = 1, non_mycelium_plant = 1,
+			flammable = 2, fire_encouragement = 60, fire_flammability = 100,
+			compostability = 65
+		},
 		sounds = mcl_sounds.node_sound_leaves_defaults(),
 		node_placement_prediction = "",
 		on_place = on_place_flower,
@@ -143,7 +149,12 @@ 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, attached_node = 1, deco_block = 1,
+		plant = 1, place_flowerlike = 2, non_mycelium_plant = 1,
+		flammable = 3, fire_encouragement = 60, fire_flammability = 100,
+		dig_by_water = 1, destroy_by_lava_flow = 1, compostability = 30
+	},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	drop = wheat_seed_drop,
 	_mcl_shears_drop = true,
@@ -167,6 +178,7 @@ def_fern.selection_box = {
 	type = "fixed",
 	fixed = { -6/16, -0.5, -6/16, 6/16, 5/16, 6/16 },
 }
+def_fern.groups.compostability = 65
 
 minetest.register_node("mcl_flowers:fern", def_fern)
 
@@ -187,7 +199,15 @@ local function add_large_plant(name, desc, longdesc, bottom_img, top_img, inv_im
 		is_flower = true
 	end
 
-	local bottom_groups = {flammable=2, fire_encouragement=60, fire_flammability=100, non_mycelium_plant=1, attached_node=1, dig_by_water=1, destroy_by_lava_flow=1, dig_by_piston=1, plant=1, double_plant=1, deco_block=1}
+	local bottom_groups = {
+		attached_node = 1, deco_block = 1,
+		dig_by_water = 1, destroy_by_lava_flow = 1, dig_by_piston = 1,
+		flammable = 2, fire_encouragement = 60, fire_flammability = 100,
+		plant = 1, double_plant = 1, non_mycelium_plant = 1, compostability = 65
+	}
+	if name == "double_grass" then
+		bottom_groups.compostability = 50
+	end
 	if is_flower then
 		bottom_groups.flower = 1
 		bottom_groups.place_flowerlike = 1
@@ -410,7 +430,10 @@ 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 = {
+		deco_block = 1, plant = 1, compostability = 65, destroy_by_lava_flow = 1,
+		dig_immediate = 3, dig_by_water = 1, dig_by_piston = 1, dig_by_boat = 1,
+	},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	node_placement_prediction = "",
 	node_box = {
diff --git a/mods/ITEMS/mcl_mushrooms/huge.lua b/mods/ITEMS/mcl_mushrooms/huge.lua
index 617f12810..0e99ae0be 100644
--- a/mods/ITEMS/mcl_mushrooms/huge.lua
+++ b/mods/ITEMS/mcl_mushrooms/huge.lua
@@ -3,7 +3,10 @@ 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 +54,7 @@ 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 +64,7 @@ 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..f6fbd2909 100644
--- a/mods/ITEMS/mcl_mushrooms/small.lua
+++ b/mods/ITEMS/mcl_mushrooms/small.lua
@@ -38,7 +38,11 @@ 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 = {
+		attached_node = 1, deco_block = 1, destroy_by_lava_flow = 1,
+		dig_immediate = 3, dig_by_water = 1, dig_by_piston = 1,
+		mushroom = 1, enderman_takable = 1, compostability = 65
+	},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	light_source = 1,
 	selection_box = {
@@ -62,7 +66,11 @@ 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 = {
+		attached_node = 1, deco_block = 1, destroy_by_lava_flow = 1,
+		dig_immediate = 3, dig_by_water = 1, dig_by_piston = 1,
+		mushroom = 1, enderman_takable = 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 bd983d72b..b474065a5 100644
--- a/mods/ITEMS/mcl_nether/init.lua
+++ b/mods/ITEMS/mcl_nether/init.lua
@@ -174,7 +174,7 @@ 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 41b23f662..f6eb0c03c 100644
--- a/mods/ITEMS/mcl_nether/nether_wart.lua
+++ b/mods/ITEMS/mcl_nether/nether_wart.lua
@@ -110,6 +110,7 @@ minetest.register_craftitem("mcl_nether:nether_wart_item", {
 	_doc_items_usagehelp = S("Place this item on soul sand to plant it and watch it grow."),
 	inventory_image = "mcl_nether_nether_wart.png",
 	wield_image = "mcl_nether_nether_wart.png",
+	groups = {craftitem = 1, brewitem = 1, compostability = 30},
 	on_place = function(itemstack, placer, pointed_thing)
 		if pointed_thing.type ~= "node" then
 			return itemstack
@@ -143,7 +144,6 @@ minetest.register_craftitem("mcl_nether:nether_wart_item", {
 			end
 		end
 	end,
-	groups = { craftitem = 1, brewitem=1 },
 })
 
 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..ae273abe9 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 +773,10 @@ 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, compostability = 50,
+		flammable = 2, fire_encouragement = 30, fire_flammability = 60
+	},
 	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..6a4e4a751 100644
--- a/mods/ITEMS/mcl_ocean/sea_pickle.lua
+++ b/mods/ITEMS/mcl_ocean/sea_pickle.lua
@@ -106,7 +106,10 @@ 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..2f58a2812 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