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Crafting Table JE4 BE3.png
This article describes content that may be included in Java Edition and Bedrock Edition. 
This content has appeared in Java Edition 1.19 and Bedrock Edition 1.19.0 development versions, but the full update containing it has not been released yet.
Sculk Catalyst
Sculk Catalyst JE1 BE1.png



Yes (64)


Blast resistance





Yes (6)





Catches fire from lava


A sculk catalyst is a block that generates sculk features around it when a mob that drops experience is killed nearby.


Natural generation[]

Sculk catalysts are generated within the deep dark biome.

Chest loot[]

Item Structure Container Quantity Chance
Java Edition 1.19[upcoming]
Sculk Catalyst Ancient City Chest 1–2 16.1%
Bedrock Edition
Sculk Catalyst Ancient City Chest 1–2 8.3%
Bedrock Edition 1.19.0[upcoming]
Sculk Catalyst Ancient City Chest 1–2 16.1%

Mob loot[]

Wardens drop a single sculk catalyst upon death.


Sculk catalysts can be mined with any tool, but hoes are the quickest. It drops 20 experience if mined without Silk Touch.

Block Sculk Catalyst
Hardness 3
Breaking time[A]
Default 4.5
Wooden 2.25
Stone 1.15
Iron 0.75
Diamond 0.6
Netherite 0.5
Golden 0.4
  1. Times are for unenchanted tools as wielded by players with no status effects, measured in seconds. For more information, see Breaking § Speed.


Sculk catalyst activating

Sculk catalyst activating.

Sculk catalyst detection range

Sculk catalyst detection range.

It turns the blocks around the dead Mob into Sculk or Sculk Vein.

If a mob dies within 8 blocks of a sculk catalyst, it blooms, giving off soul particles and creates a patch of sculk with sculk veins around that location. Blooming sculk can replace blocks in the sculk_replaceable tag, which includes the surface materials of most of the biomes in all three dimensions. If a mob is killed and detected by the sculk catalyst while over a sculk block, it may occasionally result in the growth of a sculk sensor.

The means of death of the mob is irrelevant; mobs can die from being killed by a player or tamed wolf, which yields experience, or by any other means, which does not yield experience; any kill is accepted by the catalyst. Rather than granting experience, a bubbling charge spawns where the mob died, and it travels through sculk until it finds a replaceable block. The strength of the sculk spreading depends on amount of experience the mob have dropped when it was killed by a player or wolf. Several sculk charges may end up on the same block and merge, up to 1000 experience per block.

If a mob dies and a charge is detected more than 4 blocks from a catalyst, a sculk block has a chance to use 10 experience to grow a sculk sensor or a sculk shrieker. A sculk sensor has a 9% chance to spawn and a sculk shrieker has a 1% chance to spawn. However, sculk sensors and sculk shriekers cannot spawn if there are 2 or more sensors within a 9×3×9 box with the bottom center of the box centered on the bubbling charge location (or within -4,0,-4 and 4,2,4 in relative coordinates).

A player dying can also affect the sculk catalyst, depending on how much experience the player has gathered. The sculk catalyst wouldn't spread any sculk blocks if the player has 0 experience, little if the player has few experience points and varied if the player has more experience. This could make the sculk catalyst as a way to preserve the player's experience points without having to restore all of the player's previous experience. This doesn't work on players with the keepInventory gamerule set to true.

A sculk catalyst does not respond to the death of mobs that do not yield any experience, such as baby animals. It also does not respond to the ender dragon's death,[1] although this may be implemented in the future.[2]



Bedrock Edition:

SoundSourceDescriptionResource locationVolumePitch
BlocksOnce the block has brokenbreak.sculk_catalyst1.00.8
BlocksFalling on the block with fall damagestep.sculk_catalyst0.41.0
BlocksWhile the block is in the process of being brokenhit.sculk_catalyst0.30.5
BlocksJumping from the blockstep.sculk_catalyst0.121.0
BlocksFalling on the block without fall damagestep.sculk_catalyst0.141.0
BlocksWalking on the blockstep.sculk_catalyst0.171.0
BlocksWhen the block is placedplace.sculk_catalyst1.00.8

Data values[]


Java Edition:

NameIdentifierFormTranslation key
Sculk Catalystsculk_catalystBlock & Itemblock.minecraft.sculk_catalyst


Bedrock Edition:

NameIdentifierNumeric ID FormItem ID[i 1]Translation key
Sculk Catalystsculk_catalyst715Block & Giveable Item[i 2]Identical[i 3]tile.sculk_catalyst.name
  1. ID of block's direct item form, which is used in savegame files and addons.
  2. Available with /give command.
  3. The block's direct item form has the same id with the block.

Block states[]

See also: Block state

Java Edition:

Name Default value Allowed values Description
Whether the sculk catalyst is actively spreading the sculk or not.

Bedrock Edition:

Name Default value Allowed values Description
Whether the sculk catalyst is actively spreading the sculk or not.

Block data[]

A sculk catalyst has a block entity associated with it that holds additional data about the block.

Java Edition:

  • Block entity data
    • Tags common to all block entities
    •  cursors: List of charges associated with the sculk catalyst.
      • : A charge.
        •  charge: How much power is in the charge.
        •  pos: List of three integers representing the coordinates of the charge.
        •  decay_delay:
        •  update_delay:
        •  facings:

Bedrock Edition:

See Bedrock Edition level format/Block entity format.


Icon Advancement In-game description Parent Actual requirements (if different) Resource location
Advancement-fancy-raw.pngIt Spreads
Kill a mob near a Sculk Catalyst[upcoming: JE 1.19] Adventure-adventure/kill_mob_near_sculk_catalyst


October 3, 2020Sculk Catalyst (pre-release).png Sculk catalysts are shown at Minecraft Live 2020.
November 13, 2020Sculk Catalyst JE1 BE1.png The sculk catalyst has a new texture in a tweet from Brandon Pearce.
April 26, 2021Kingbdogz states that sculk features aren't coming in 1.17.
October 16, 2021Sculk features were delayed to 1.19.
Sculk Catalyst Bloom JE1 BE1.gif New sculk catalyst functions were shown.
Upcoming Java Edition
1.19Deep Dark Experimental Snapshot 1Sculk Catalyst JE1 BE1.png Sculk Catalyst Bloom JE1 BE1.gif Added sculk catalysts.
22w11aImplemented sculk catalysts into normal snapshot.
22w12aSculk catalysts no longer generate sculk shriekers.
22w13aSculk catalysts now can generate sculk shriekers again.
22w17aWardens now drop a single sculk catalyst upon death, making them renewable.
Bedrock Edition
1.17.30beta"Sculk Catalyst" was mentioned in Bedrock Beta documentation.
beta Catalyst (top texture) JE1 BE1.png Sculk Catalyst (side texture) JE1 BE1.png Sculk Catalyst (bottom texture) JE1 BE1.png Sculk Catalyst (top bloom texture) JE1 BE1.png Sculk Catalyst (side bloom texture) JE1 BE1.png Sculk Catalyst textures were shown in internal Caves & Cliffs textures.
Vanilla Experiments
beta Catalyst JE1 BE1.png Sculk Catalyst Bloom JE1 BE1.gif Added sculk catalysts.
Wild Update
beta sculk catalysts to the "Wild Update" experimental toggle.
beta catalysts were updated to match Java Edition's behavior.
Upcoming Bedrock Edition
1.19.0beta catalysts are now available without enabling experimental gameplay.
beta now drop a single sculk catalyst upon death.


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