One little last-minute tip for getting rid of unwanted mushrooms is nitrogen fertilizer. You’ll want to go with powdered nitrogen fertilizer, just adding a bit to the soil, and don’t use a time-released or liquid variety. What the nitrogen does is it will speed up the decomposition of dead matter in the soil, so that those pesky mushrooms won’t have anything good to eat!  All plants love nitrogen, so be sure to try this the next time that you see mushrooms making their appearance and you might just be pleasantly surprised!