Gardening Answers Knowledgebase
Knowledgebase record #565
Our backyard (which is flat and no pine trees) has hundreds of tiny mushrooms throughout the grass. Our front yard (which has a slight slope and one large pine tree) has many huge mushrooms. Otherwise, we have good looking grass. We have lived here for a very long time without ever seeing this problem. I know one answer is to "sweeten" the soil with lime. Should we do this now, in the fall, or at what time of year? Should we remove the mushrooms or let them be? Any other suggestions?
University of California, Davis Integrated Pest Management has guidelines on managing mushrooms in lawns. Here is an excerpt:
As for sweetening the soil with lime(making it less acidic), it is best to do a soil test before attempting to amend for soil pH. Also, as this information from Colorado State University (which focuses on fairy rings, a type of fungus) points out, fungi thrive or survive at various soil pH levels:
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June 24 2013 13:17:10