Follow-up on Pony Tail palm sprouting white bullbus feet protruding out of drain hole at bottom. See picture.
bottom of the pot. See attached picture.
Certified GKH Gardening Expert
I see now! An image makes all of the difference. That is leucocoprinus birnbaumii. This potted plant mushroom poses no threat, but should not be eaten as it would then be a hazard.
You won't be getting rid of them any time soon, but they are not causing harm. They are helping break down soil and are companions for your plant.
Normally I would say that this is from overwatering, but in this case... These mushrooms will grow even when it is bone dry if the spores are present.
There is no further action required, unless you just want to pick them out. They will grow back, as this is a small portion of the mushroom. The "body" lives throughout the soil.