University of Florida

Fairy Rings

Fairy rings are circles of mushrooms that pop up in Florida lawns when summer rains create the right conditions for the fungi.

Fairy rings may start small but can expand year after year, reaching up to 50 feet across.

They’re caused by several fungi that feed on decaying organic material buried in the ground. Because the fungi convert organic matter into nitrogen, the grass in the fairy ring area can turn a darker green.

You can help prevent fairy rings by removing the roots of trees and shrubs that you take out.

Because fairy rings are more of an eyesore than a serious problem, the best option is to remove the mushrooms by hand as they sprout up and throw them in the garbage. And never eat fairy ring mushrooms, because many are poisonous.

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