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Lichens on crepe myrtles
#382225 May 14th, 2014 at 03:00 AM
Joined: May 2014
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Joined: May 2014
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Had 44 natchez crepe myrtles installed 6 was ago. 7 have leafed out. Others, not, green under bark. All have lichens. Came from south Louisiana to south arkansas. Any comments?

Re: Lichens on crepe myrtles
Littlebaybarbara #382233 May 14th, 2014 at 11:31 AM
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First, no matter what form or color your lichens are they are harmless to the affected plants.

I found it said that the use of copper-based fungicides are recommended for lichen control. These fungicides are sold under many different trade names.
Such products contain copper hydroxide.

Mix together 1 level tbsp. of chemical in a gallon of water and spray on affected plant areas.
Repeat applications every one to two weeks.

But at the end of the day unless you want to, you do not need to do anything.
However as an FYI:
Lichens are most attracted to plants with declining and poor health. Because of that: Do not overly prune plants as too much sunshine can promote lichen growth on Crepe Myrtles.

Good Luck.

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