Updated for Java Edition 26.3 (October 2026).
Mushroom fields is a rare Overworld biome of mycelium islands covered in huge red and brown mushrooms, out in the deep ocean. Its spawn list has no hostile mobs at all, and it is the only biome where mooshrooms spawn. In our sample of 300 Java 26.3 seeds, the nearest one was a median 2,789 blocks from spawn.
| Dimension | Overworld |
|---|---|
| Where it generates | Islands far out at sea, almost always surrounded by deep ocean |
| How common | 0.14% of the surface in our sample (about 1 block in 700) |
| Distance from spawn | Median 2,789 blocks; within 1,000 blocks in 6% of seeds, within 2,000 in 24%, within 5,000 in 85% (our sample) |
| Mobs | Mooshrooms on the surface, bats in caves, glow squid in underground water. No hostile mobs in the spawn list. |
| Notable blocks | Mycelium, huge red and brown mushrooms, small mushrooms, sugar cane |
| Structures | Ruined portals; underground, mineshafts, trial chambers and strongholds |
| Climate | Temperature 0.9, downfall 1.0 |
| Biome ID | minecraft:mushroom_fields |
| Added in | Java Edition 1.0 (2011) as Mushroom Island; renamed Mushroom Fields in 1.13 |
How to find mushroom fields
Look out to sea, not inland. In our sample, a mushroom fields edge touched deep ocean 36% of the time, deep cold ocean 23%, deep lukewarm ocean 22% and deep frozen ocean 12%. Only 7% of its border was shallow warm ocean. So the island sits in the middle of open deep water, and a boat trip straight away from the coast is the usual way to find one. From a distance, the purple-gray mycelium and giant mushroom caps are easy to spot.
Most seeds make you sail for thousands of blocks. These three Java 26.3 seeds put mushroom fields within about 650 blocks of spawn. Each coordinate is inside the biome, checked at block level.
| Seed | Mushroom fields at | From spawn | Map |
|---|---|---|---|
-1872587071853328997 |
X -98, Z -250 | 488 blocks | Open on the map |
-7703020730019599874 |
X 10, Z 74 | 359 blocks | Open on the map |
2546873176684604958 |
X -126, Z -718 | 642 blocks | Open on the map |
In a world you already have, /locate biome minecraft:mushroom_fields gives the nearest one (cheats on), or paste your seed into the biome finder to see every mushroom island around spawn. These are Java seeds; the same number on Bedrock makes a different world.
Do hostile mobs spawn in mushroom fields?
No. The biome has no hostile mobs in its spawn list, so zombies, skeletons, creepers, spiders and endermen never spawn here naturally, at any light level, day or night. That holds in caves under the island too, as long as they are still mushroom fields and not a separate cave biome. Pillager patrols don’t spawn here and zombie sieges don’t happen.
A few things can still bring hostile mobs in. Mobs can walk or swim over from neighbouring biomes, dungeons with mob spawners generate underground here like anywhere else, and trial chambers under the island have their own spawners. Light up and wall off any dungeon you find below your base.
Mooshrooms
Mooshrooms spawn here in herds of four to eight, and nowhere else naturally. A mooshroom works like a cow with extras: milk it with a bucket for milk, or with a bowl for mushroom stew. Shear it and it turns into a normal cow and drops five mushrooms. Red is the usual color. When lightning strikes a mooshroom it switches between red and brown, and a brown mooshroom fed a flower gives suspicious stew the next time you milk it with a bowl, with an effect that depends on the flower.
Mycelium and mushrooms
The ground is mycelium instead of grass. It spreads onto nearby dirt the way grass does, and you need a Silk Touch tool to pick it up; otherwise it drops dirt. Small mushrooms can grow on mycelium at any light level, and bone meal on a mushroom planted on it grows a huge mushroom if there is room above.
No trees grow here, so bring logs or saplings if you plan to build. Pumpkins don’t generate here either. Sugar cane does grow along the water’s edge.
Is there buried treasure in mushroom fields?
No. Buried treasure only generates under beach biomes, and mushroom islands have no beach biome around them: in our sample their edges touched ocean and nothing else. There are no villages or pillager outposts either. Ruined portals can generate on the island, and shipwrecks can generate in the ocean around it.
Mushroom fields vs mushroom field shore
They used to be two biomes: the island itself, and a narrow shore strip around its edge. Java Edition 1.18 (2021) merged the mushroom field shore into mushroom fields, so new worlds only generate mushroom fields, coast and all. /locate biome minecraft:mushroom_field_shore no longer works.
What changed in 2025-26
Wilderness Bound (Java 26.3, September 2026) didn’t change mushroom fields.
In The Copper Age (Java 1.21.9, September 2025), Mojang closed the bug report about mushroom fields listing pumpkin patches that never generated (MC-278435). The patch was taken out of the biome, so there are still no pumpkins here.
Source: the official 1.21.9 release notes.
Java vs Bedrock
On Bedrock, since version 1.21.100, grass blocks no longer generate at the bottom of carved terrain in mushroom fields (Bedrock 1.21.100 changelog). The seeds and statistics on this page are for Java Edition only.
How we measured
The numbers on this page come from our own seed map engine, running Java Edition 26.3 world generation. We generated 300 random seeds and sampled every 16th block across a 10,240 by 10,240 block square centered on each world’s spawn. “How common” is the biome’s share of those samples; “distance from spawn” is how far the nearest mushroom fields sample was. Mushroom fields showed up inside that square in 279 of the 300 seeds. The seeds above were picked from the same run, and each coordinate was re-checked at block level.
