Mold on Pine Trees - Knowledgebase Question

Lillian, AL
Avatar for michey
Question by michey
April 20, 1998
I have a very wooded yard and for the first time in years all the pine straw was raked out from under the trees. It was at least 8" deep. Where the straw was against the tree trunks, there is a ring of mold on almost every tree. I was hoping it would improve with the new air circulation but it has been over 3 weeks and no improvement. Should I do something or just let it be?

Answer from NGA
April 20, 1998
My guess is that this is just a natural fungus, one of the many that are responsible, in part, for breaking down organic matter on the forest floor. There are lots of nutrients tied up in those dropped leaves and needles, and microorganisms and earthworms help convert them into forms that can be used by the trees. It's a wonderful cycle!

Mold/fungus tends to grow in places where it stays moist and dark--and the bark under those pine needles was a perfect spot. I have a feeling now that it is exposed to air, it will eventually disappear. If you're really concerned, you could scrape a sample off and bring it in an enclosed bag to a local nurseryman.

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