Most of the time, in damp, shady areas you will spot a substance on the branches or trunk of a seemingly declining tree. This substance can be either lichen or moss.

What’s the difference between lichen and moss on trees?

Lichen

• A combination of fungi and algae

• Can be a range of colors including blue, green gray etc.

• Appears in thin flaky patches

Moss

• Always dark green

• Coarse texture

Does moss or lichen harm my tree?

Lichen does not harm trees, though it might seem that way because they are usually found on declining specimen. Actually, lichen just tends to thrive on unhealthy trees because when they are under stress, there are usually less leaves and branches, allowing more light to shine on the trunk and creating the perfect environment for lichen to take over.

How can I get rid of moss or lichen on my trees?

There is no pressing need to rid the tree of moss or lichen as it does no harm to your trees and actually can be beneficial to the environment by providing a food source for many birds and other animals. However, if you would still like to get rid of it, a fungicide called copper sulfate can be applied by an ISA certified Arborist to kill it.

If you have moss or lichen on your trees, it is best to have them assessed properly by one of our ISA certified Arborists to rule out any potential tree disease, tree decay or pests that could be causing stress on the tree to begin with. Use the link below to be connected with an ISA certified arborist today!

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