plant problem

Asked March 16, 2015, 5:28 PM EDT

growth on azelea plant. looks like leafy blueish scab. Killing plant. What is it (shown in photp) and how can I stop it. Dennis Townsend phone 864 457 5957

Spartanburg County South Carolina

1 Response

These are lichens and luckily they are not killing or harming the plant. They do often indicate that the plant is performing poorly. I have seen azaleas in full sun decline and have problems with thinning foliage, so lichens move in. Here is a video that may be helpful with explaining lichens. There would be another issue going on with the azalea leading to thinning foliage...which would need to be corrected to improve plant health :) hope this helps!