We’ve all seen the odd mushroom pop up in our lawns, but if you’re in the turfgrass management world, you may have heard of the term “fairy ring” and wondered exactly what that means.

A single in your lawn may not exactly qualify as part of a fairy ring, which is named such because of the circular growth pattern. These occur because a single mycelium or spore begins feeding on thatch or organic matter, then forms outward growth until a ring is formed. Even before mushrooms have formed above the grass surface, you may witness a fairy ring as a circle of dark green grass.

Sometimes, this growth can cause damage or even kill the turf within the ring. To eliminate fairy ring, several methods are available, including fertilizer, removal, thatch removal, and fungicides. Consult with a turf professional to learn the best way to eliminate this lawn problem.