I have several medium to large size container plants in my bay window in Brooklyn, NY. About 6 weeks ago, I discovered a bright yellow mushroom growing from the soil of one kalanchoe plant. The cap of the mushroom was 1.5 to 2 inches in diameter with lots of spores on top and a bright yellow stalk. There was a greyish powder over the soil around where the mushroom was growing (I supposed more spores?). My husband took the pot outside and dug out the mushroom as well as all the soil that we saw the grey powder on.
After a few days, 3 more mushrooms grew in the pot. We finally gave up and just left the plant in the corner of the backyard. The day we took it outside, the mushrooms wilted in the bright hot sun. About 10 days later, when I checked on the plant again, I saw 3 mushrooms growing there again.
Just yesterday, I saw a mushroom growing in the soil of the giant aloe pot that I have in the bay window next to where the kalanchoe was. I only water these plants about once a week but it does get very hot in the summer in the window since we have the vertical blinds mostly closed during the day when we are at work. Help! What are these things? How can I get rid of them without losing all my plants? I would appreciate any help you can offer me. Thanks.