I Have Large Tubelike Growths Coming Out Of The Drainage Holes In One Of My Houseplants.

Question

The plant was outside sitting in our rock garden to help revive it for about 2 weeks. It revived but now there is this strange growth out of the bottom side holes.

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Answer 1

This will be Leucocoprinus birnbaumii. They are harmless to your plants, and beneficial to your soil. They are TOXIC to humans, so do not eat them.

https://www.gardeningknowhow.com/houseplants/hpgen/getting-rid-of-mushrooms-growing-in-houseplant-soil.htm