I take good care of my lawn, so why do I have mushrooms growing? Shouldn't fertilizer take care of this problem?
Mushrooms are the reproductive portion of underground fungi that feed off dead organic material in the soil. These fungi release nitrogen (the main component in fertilizer) as a waste product. For this reason, mushrooms will sometimes be accompanied by deep green, lush grass growth that occurs in circles or random streaks through the yard. Mushrooms appear regardless of the level of care you invest on the lawn, occurring most often during wet weather. There is no treatment for the fungi that give rise to mushrooms. Raking up the mushrooms is the best way to improve the appearance of the lawn, although they may return with the next rain.