diff --git a/mods/ITEMS/mcl_cake/init.lua b/mods/ITEMS/mcl_cake/init.lua
index 1040710645..f3a69f4131 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_core/craftitems.lua b/mods/ITEMS/mcl_core/craftitems.lua
index 85a078766f..fc84c50f54 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 fe1ee58c29..b4edc50456 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 9c46c3323e..62d5cc2b5f 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 9505bb19ab..1a6780618f 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 a5ef7aa97d..e4903958ef 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 dfb9624463..727a784601 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 e312aa262e..21096042b8 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 7983c58a2f..1c3ebcdfa5 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 b3e49a61f3..6bbc507ec9 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 79cd13115e..04a971de88 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 0eb71ac913..a38f118627 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 da1b84b2d4..a254ed36c6 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 14e0df5cb4..d5112a36dd 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 617f128107..0e99ae0be2 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 c6d7edcdca..f6fbd29091 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 bd983d72b9..b474065a5a 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 41b23f662b..f6eb0c03cc 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 422f475ac8..ae273abe9a 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 d215fd3b30..6a4e4a751d 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 5fd3827756..2f58a28124 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