The picture below shows several toadstools that seem to appear overnight after a few days of rain. Toadstools are poisonous mushrooms.Somehow I thought these toadstools would be around for awhile, but I was wrong. It was therefore a complete surprise to find them all wilted a couple days later. I understand mushrooms last for only a few days, some may sprout and die within 24 hours while others may survive for up to one week. Mushrooms are delicate fruits, and exposure to the sun and the heat usually cause them to wilt or dry out.