Yellow Mushroom – Leucocoprinus birnbaumii

I think that’s what it’s called after searching about yellow mushroom on the Internet.


I was shocked to see those yellow heads in my plant pot after a hot and rainy day. I think this is what Malay proverb said about cendawan tumbuh selepas hujan – how fast mushroom sprouts after a rainy day. One day there are none, the next day one pops after another.

It’s probably poisonous so since mushroom grows by disseminating spores, I took them out from the pot and yet after a few days I saw a whole new bunch popped up in the same plant pot.

On my third attempt, I managed to evade their growth and hopefully I won’t get to see them again. I know they might be harmless for the plant, but still having something else sharing the soil of my precious flowering plant seems like a pest or weed to me..heh!

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  • Rob Brown

    I found some little yellow shroomies too…Were yours growing in a pot with a “money tree” palm?

    Rob Windsor ONtario



  • Hati

    It seems to be growing in any pot that gets the rain and sunshine, even in my Chrysanthemum pot..huhu :(

  • Jose Antonio

    It is a leucocoprinus birmaumii

  • Lisa

    I have a rubber plant too, and it grew in there after the hurricane bands that we just had. It grew to the picture, and then all of a sudden in minutes, I looked back over, and it grew to a head! I was shocked!!

  • Mushroom growth is so random… My garden goes years without ever seeing them, and then all of sudden — wham! They are everywhere for a couple of weeks. Still haven’t figured it out…

  • becky

    does anyone know if they can contaminate the surrounding plants? They are growing in my potted herb garden.

  • Found the same thing in our “money tree” pot this morning. And oddly enough, we’re also in Windsor, Ontario like Rob above.

  • cordles

    i saw this too is it poison

  • ecoisland

    having mushroom in you soil can be a good thing, mycellum running

  • Kasi

    Leucocoprinus birnbaumii is harmless to you, your pets, and your plants as long as it isn’t ingested. The first time I saw them they popped up in my “money tree” as well (very interesting!) – In Manitoba a couple years ago. I really like how they look and I have been trying for a long time to harvest them and figure out their growth patterns with little luck.

  • jim

    yellow mushroom like picture growing with meyer lemon planted after hurricane IKE, GALVESTON 9/13/08

  • Taissia

    I found one in in my pot with a cactus. Was shocked. Now that I know they are harmless I feel much better. I don’t know if this is useful to anyone but the soil in the pot was yellow for weeks so I thought it had mold from too much watering, was amazed to find a yellow mushroom sticking out of it today.

  • quaredunt

    Yellow mushrooms out of the blue!
    I’d never seen them before today (June 6, 2015) in the soil of a big potted plant that has been in our house for at least 20 years, a big gangly spidery looking plant that has survived poor care. 5 big ones 3-5 cm wide, and at least a dozen little mushrooms sprang up overnight after a heavy downpour on June 5.
    Are they by any chance hallucinogenic? They sort of look it!