There's no specific seed for a mushroom biome in minecraft, the world is bound to have one somewhere, it's just the matter of finding it.
A seed for mushroom island is 614119090021688218 with world type set to default. You will spawn on normal ground next to the ocean. You should see a mushroom island a little bit into the ocean.
There is no specific seed for a Mushroom Biome. They are just really rare. But if you want to spawn near one, type in the seed 1718954199353406952 and spawn on an island. Just keep swimming in a certain direction (I forgot the direction :() to make it to the MushroomIsland Biome.TIP: THE MUSHROOM BIOME IS ACTUALLY CALLED "MushroomIsland".
there is no mushroom island.
mushroom
You grow mushrooms in the mushroom shed. You can get shiitake spores from vesta and to get toadstool and matsutake you need to put that mushroom in the seed maker.
yeah
check out hole island
ANSWER:Mushrooms don't have seeds, they have spores. You can get mushroom spores by tapping a mature mushroom and collecting the spores to transfer to another growth medium. They are very minute and hard to see.
mushroom, moss, fern, algae...
you find a big mushroom on the ground and you get a tiny mushroom from a paras (have to catch)
Victoria Island - Henesys - Mushroom Park