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Not to be confused with Mycelium.
"Nether Grass Block" redirects here. For the main ground block in the overworld, see Grass Block. For other uses, see Grass (disambiguation).

Nylium is a variant of netherrack that generates in the Nether. It has two variants: warped nylium and crimson nylium which both spawn in different biomes.



Nylium only drops itself when mined using a pickaxe enchanted with Silk Touch; if mined using a normal pickaxe, it drops netherrack. If mined without a pickaxe, it drops nothing.

Block Nylium
Hardness 0.4
Breaking time[A]
Default 2
Wooden 0.3
Stone 0.15
Iron 0.1
Diamond 0.1
Netherite 0.1
Golden 0.05
  1. Times are for unenchanted tools as wielded by players with no status effects, measured in seconds. For more information, see Breaking § Speed.

Natural generation[]

Warped nylium generates in the warped forest biome, and crimson nylium generates in the crimson forest biome.

Mob loot[]

Nylium is dropped when an enderman dies while holding it.

Chest loot[]

Item Structure Container Quantity Chance
Java Edition
Crimson Nylium Bastion remnant Hoglin stable chest 2–7 22.8%
Bedrock Edition
Crimson Nylium Bastion remnant Hoglin stable chest 2–7 22.8%


Using bone meal on netherrack that is placed next to or adjacent to warped or crimson nylium transforms the netherrack into nylium of that type. Air must be above the netherrack during this process. This transformation can also be done by activating a dispenser with bone meal directly into that netherrack block. If both types of nylium are present, there is an equal chance of either being spread.


Similarly to grass blocks and mycelium, nylium decays (based on random ticks) into netherrack when an opaque block is placed above it. However, unlike grass blocks and mycelium, it does not decay underneath water or lava.[1] It decays when covered with snow.[2]

Like mycelium and podzol, mushrooms can remain on nylium blocks in any light level. Huge mushrooms can be grown by using bone meal on mushrooms planted on nylium.

Fungi can likewise be grown into huge fungi using bone meal, though the fungus must be placed on the same type of nylium, or the bone meal will not even be consumed.

Similar to grass blocks, the player can apply bone meal to nylium. This nylium, along with nearby nylium, generate vegetation that occurs in their native biome (crimson nylium generates mostly crimson forest vegetation and warped nylium generates mostly warped forest vegetation), and just like in the native biomes, the opposite type of fungi occassionally generates. The vegetation is generated in a 5x5 area, centered on the nylium block on which bone meal is used.

Note Blocks[]

Nylium can be placed under note blocks to produce "bass drum" sounds.


Java Edition:

SoundSubtitlesSourceDescriptionResource locationTranslation keyVolumePitchAttenuation
Block brokenBlocksOnce the block has brokenblock.nylium.breaksubtitles.block.generic.break0.850.816
Block placedBlocksWhen the block is placedblock.nylium.placesubtitles.block.generic.place0.850.816
Block breakingBlocksWhile the block is in the process of being brokenblock.nylium.hitsubtitles.block.generic.hit0.250.516
None[sound 1]Entity-DependentFalling on the block with fall damageblock.nylium.fallNone[sound 1]0.50.7516
FootstepsEntity-DependentWalking on the blockblock.nylium.stepsubtitles.block.generic.footsteps0.151.016
  1. a b MC-177082

Bedrock Edition:

SoundSourceDescriptionResource locationVolumePitch
BlocksOnce the block has brokendig.nylium1.00.8-1.0
BlocksWhen the block is placeddig.nylium1.00.8
BlocksWhile the block is in the process of being brokenhit.nylium0.230.5
PlayersFalling on the block with fall damagefall.nylium0.41.0
PlayersWalking on the blockstep.nylium0.151.0
PlayersJumping from the blockjump.nylium0.121.0
PlayersFalling on the block without fall damageland.nylium0.141.0

Data values[]


Java Edition:

NameIdentifierBlock tagsTranslation key
Crimson Nyliumcrimson_nyliumenderman_holdable
Warped Nyliumwarped_nyliumenderman_holdable

Bedrock Edition:

NameIdentifierNumeric ID FormItem ID[i 1]Translation key
Crimson Nyliumcrimson_nylium487Block & Giveable Item[i 2]Identical[i 3]tile.crimson_nylium.name
Warped Nyliumwarped_nylium488Block & Giveable Item[i 2]Identical[i 3]tile.warped_nylium.name
  1. ID of block's direct item form, which is used in savegame files and addons.
  2. a b Available with /give command.
  3. a b The block's direct item form has the same id as the block.


Java Edition
September 28, 2019Crimson Nylium JE1 BE1 Warped Nylium JE1 BE1 Crimson and Warped nylium is announced at MINECON Live 2019.
Then they use a planks sound.
1.1620w06aCrimson Nylium JE1 BE1 Warped Nylium JE1 BE1 Added nylium.
20w07aWarped nylium now has a 1109 (~0.92%) chance of being offered by piglins when bartering, in a stack size of 1, making it renewable.
20w09aWarped nylium now has a 5226 (~2.21%) chance of being offered by piglins when bartering, in a stack size of 1–5.
20w10aWarped nylium can no longer be obtained by bartering with piglins, making it no longer renewable.
20w12aNylium can now be fertilized with bone meal to grow roots, fungi and nether sprouts.
20w16aCrimson nylium now generates in chests within bastion remnants.
20w22aNylium now drops netherrack, unless broken with Silk Touch, in which case it drops itself.
1.16.220w27aMushrooms can now be placed and grown on nylium at any light level.
Bedrock Edition
1.16.0beta Nylium JE1 BE1 Warped Nylium JE1 BE1 Added nylium.
Nylium can be fertilized with bone meal to grow roots and fungi.
beta nylium now generates in chests within bastion remnants.


Issues relating to "Nylium" are maintained on the bug tracker. Report issues there.


  • The name is a portmanteau of "Nether" and "Mycelium", the name of the root-like part of a fungus.


  1. MC-173356 — resolved as "Works As Intended".
  2. MC-174639 — resolved as "Works As Intended".

External Links[]