When gardeners see lichen growing on the trunks and branches of trees and shrubs they usually get worried. After all, something is growing on their tree. In fact, most people want to blame these frilly blue-green organisms for any tree health problems. This isn’t surprising because they are often seen growing on plants in poor health. However, lichens are not the problem but rather a sign of poor tree health.
In the short term, I would recommend the following procedures:
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