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Kelp Plant.gif




Blast resistance



Any tool




Yes (64)



Catches fire from lava




Data value

dec: 393 hex: 189 bin: 110001001

Namespaced ID

See § Data values

Jasper Boerstra Mojang avatar.jpg

Kelp is the first plant to utilise a new kind of visual feature: Animation. Before, the only things that [were] animated were either particles or the lava/water and some other solid blocks. But we never animated a plant that used transparency.

This was a new challenge for the style of Minecraft - as it has never been done before, we had no frame of reference to adapt the animation style to - so we had to find it.

Jasper Boerstra[1]

Kelp is an underwater plant that generates in most oceans.

Natural generation[edit]

Kelp naturally generates in any ocean biomes, except in frozen, deep frozen, warm, and deep warm oceans, near and around seagrass. Each chunk has 118 chance to generate a group of kelp.


Kelp can be mined instantly with any tool or with the player's fist. Breaking one part of a kelp stalk destroys all kelp blocks above it. Each block drops a kelp item.


Kelp can be bought from wandering traders for 3 emeralds.


Kelp can be placed underwater by hand, or anywhere by the use of commands such as /setblock. Placing it by hand gives it a random age value between 0 and 24. Kelp can only be placed in water source blocks or downward flowing water, not horizontally flowing water.

Besides for decoration, kelp can be used to turn flowing water into water source blocks, which can be useful for faster bubble column elevator creation. Any building block can be placed on top of a kelp plant, which can be useful for building underwater.

Cooking ingredient[edit]

Name Ingredients Smelting recipe
Dried Kelp Kelp +
Any fuel

This recipe awards 0.1 experience.


Placing kelp into a composter has a 30% chance of raising the compost level by 1.

Growth mechanics[edit]

Kelp can be planted on a broad variety of blocks. It grows underwater if it has either a source block of water or flowing water above it. If flowing water is above it, the kelp plant transforms the flowing water into a water source block when the plant grows into it. Neither players nor dispensers can remove the water source block a kelp grows in without breaking the kelp first.

Kelp can grow in complete darkness and does not require any light level to grow. Kelp also grows without having sky access. In Bedrock Edition, bone meal can be used to grow kelp a few blocks taller.

Kelp, when planted, is generated with a randomly chosen age value, which can be checked when pressing F3[Java Edition only]. The age value of a newly planted kelp plant varies randomly between 0 and 24. Each time the kelp grows in height by one block, the newly generated top of the kelp plant increases its age by 1. When the top block of the kelp plant reaches an age of 25, it stops growing. This means that kelp can naturally grow to a height between 2 (if the first kelp plant had an age of 24) and 26 blocks (if the first kelp plant had an age of 0).

When a kelp plant block is broken, the age of the kelp plant block underneath is randomized to a value between 0 and 24 and the kelp continues growing until it reaches age 25. It is possible to use this mechanic to cultivate a kelp plant to increase its growth height beyond its natural maximum height of 26 blocks. This can be done by breaking the very top of the kelp plant each time it reaches age 25. A kelp plant cultivated by a player in this way repeatedly grows until it reaches sky limit.

Each time it receives a random tick, kelp has a 14% chance of growing.


Kelp farming is similar to farming sugar cane, although kelp must be placed underwater. Automation of harvest is easier because, as of the aquatic update, items float up in water.


Sound Subtitle Namespaced ID Subtitle ID Source Pitch Volume Attenuation distance
Block breaking block.wet_grass.hit subtitles.block.generic.hit Blocks 0.5 0.25 16
Block broken block.wet_grass.break subtitles.block.generic.break Blocks 0.8 0.8 16
Block placed block.wet_grass.place subtitles.block.generic.place Blocks 0.8 0.8 16
Footsteps block.wet_grass.step subtitles.block.generic.footsteps Blocks 1.0 0.15 16
No subtitle block.wet_grass.fall (Plays when fallen on from a height) Blocks 0.75 0.5 16

Data values[edit]


Java Edition:

Block Namespaced ID Item Form
Kelp kelp Yes
Kelp Plant kelp_plant No

Bedrock Edition:

Block Namespaced ID Numeric ID
Kelp kelp 393

Block states[edit]

Top only

Java Edition:

Name Default value Allowed values Description
A freshly-planted kelp starts with a random age between 0 and 24.
Below age 25, a kelp may try go grow more kelp above it with the same age value incremented by one.
Kelp stops growing at age 25.


This page would benefit from the addition of more images.
Please remove this notice once you've added suitable images to the article. The specific instructions are: To match other Minecon annoucement features: a Minecon Earth gif of kelp.
Java Edition Classic
May 21, 2009Notch shows interest in adding a "seaweed" block.
November 18, 2017Kelp plants were shown in a clip of MineCon Earth.
Java Edition
1.1318w07aKelp Revision 1.gif Added kelp.
18w07bKelp now behaves more like water, meaning mobs can no longer spawn within the plant under water nor can they replenish their breath by swimming through it.
18w10aKelp Revision 2.gif The texture for kelp has now been overhauled.
18w14aKelp Plant.gif Top of the kelp textures have now been shifted slightly downwards.
The generation rules for kelp have now been changed, it now mainly generates in cold ocean biomes and can no longer generate in warm oceans.
18w20aThe "kelp_top" has now been changed ID to "kelp" and "kelp" has now been changed to "kelp_plant", for both the block and item forms.
pre2Kelp is now destroyed by sponges.[2]
pre6Added 5 new sound events that apply to kelp: block.wet_grass.break, block.wet_grass.fall, block.wet_grass.hit, block.wet_grass.place, and block.wet_grass.step.
1.1419w03aPlacing kelp into the new composter has a 10% chance of raising the compost level by 1.
19w05aKelp now has a 30% chance of increasing the compost level in a composter by 1.
Bedrock Edition
1.4.0beta Revision 1.gif Added kelp.
beta The kelp item texture has now been updated to the Java Edition's.
1.5.0beta Plant.gif The texture of the kelp plant has now been updated.
1.10.0beta can now be bought from wandering traders for 3 emeralds.
1.11.0beta can now be used to fill composters.
Legacy Console Edition
TU691.76Patch 38Kelp Plant.gif Added kelp.


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


  • In real life, kelp isn't considered a plant, but rather an algae.
  • Minecraft's kelp appears to be based on the real-life Giant Kelp, given its size.



  1. "How We Ruin-ed Minecraft" – Minecraft.net, March 5, 2018
  2. MC-127111