Azalea Plants

Azalea Bush Covered in a Greenish, Powdery Growth

jeanie60 added on April 4, 2012 | Answered

I have an old azalea bush that is covered in a greenish, powdery looking growth. Many of the limbs have sparse flower and leaf growth, and a few have healthy looking vegatation. I pruned most of the dead wood this winter. This bush has been beautiful in the past and I would like to save it. Should I prune it almost to the ground in an attempt to save it?

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Certified GKH Gardening Expert
Answered on April 5, 2012

White powdery growth, or powdery mildew, on plants is generally associated with a fungal infection. Here is an article on treating this problem that you may find helpful:

If it's green colored and sort of flaky, you may be seeing lichen. It is not harmful to the plant, but typically a symptom of stress. This article will explain more about them:

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