---
title: Yellow houseplant mushroom in a terrarium | Glass Jar Garden
description: Yellow houseplant mushroom (Leucocoprinus birnbaumii): A little yellow mushroom that pops up from potting soil. Harmless to plants.
url: https://glassjar.garden/guide/moulds/leucocoprinus-birnbaumii/
---

Moulds and films

# Yellow houseplant mushroom
Leucocoprinus birnbaumii

A little yellow mushroom that pops up from potting soil. Harmless to plants.

## Care

- Air humidity: 85 to 100%

- Temperature: 22 to 32 °C

## Description
Its spores ride in on bagged potting soil and fruit when the jar is warm, wet and rich. The scaly cap fades to pale yellow-white within days. It signals very moist soil and is toxic if eaten, so mind pets and children.

Also called flowerpot parasol, plantpot dapperling, lemon-yellow lepiota.

Estimated, where sources were thin: growth_rate (fruiting bodies, not spreading mat); typical_duration_days per flush; temp_c; mycelium persists indefinitely and re-fruits.

## Sources

- [en.wikipedia.org/wiki/Leucocoprinus_birnbaumii](https://en.wikipedia.org/wiki/Leucocoprinus_birnbaumii)
- [botit.botany.wisc.edu/toms_fungi/feb2002.html](https://botit.botany.wisc.edu/toms_fungi/feb2002.html)

[Grow it in a jar](https://glassjar.garden/?guide=moulds/leucocoprinus-birnbaumii)

[White fuzzy mycelium (new-wood bloom)](https://glassjar.garden/guide/moulds/white-saprophytic-mycelium/) · [All moulds and films](https://glassjar.garden/guide/moulds/)