Test Your Knowledge - May

Lichens growing on the branch of a tree
Lichens growing on the branch of a tree
Karen Russ, HGIC

Yes! These are lichens. They are not harmful to the plant, and are merely using the plant as a place to anchor. While lichens often appear on plants that are stressed, they are not the cause of the stress. When stressed plants lose leaves, more sun reaches the branches, creating good conditions for lichens to grow. For more information on lichens, see HGIC 2354, Spanish Moss, Lichens & Slime Molds.

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