QuestionsHow to growLawnsWeedsBlack Toadstools on Lawn 0 Vote Up Vote Down michael mcentee asked 17 years ago Lawn is badly infected with black evil looking toadstools – afraid for small children (2) eating – how do you get rid of the toadstools /infection 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago These sound like inkcap toadstools. If you are concerned about toadstools or mushrooms on a lawn, just trample them down to mush or pick and remove them when you see them. It is a seasonal thing in late summer and autumn for soil fungi to fruit.