White powdery looking infestation

Asked July 11, 2018, 1:10 AM EDT

I have an infestation on plants and shrubs in my gardens that looks like small deposits of white cotton candy. I have been trying to get rid of it with Sevin spray and removing infected areas. Wherever I find it, the infected area is dying. I suspect it winters over and gets into the ground and inside azaleas and kills them slowly. I have lost many azaleas recently. I have dealt with it other recent years but this year it is more prevalent and showing up everywhere. How can I eliminate it?

Prince George's County Maryland insect or spider id

6 Responses

Please send us photos of the plants, around the base of the plants, and affected foliage so we can see what you are dealing with.

mh

Here are pics if I can figure out how to send. One is an insect on my hand. Others are on azalea leaves. There is no infestation at base of Bush that I can see.

Here are pics if I can figure out how to send. One is an insect on my hand. Others are on azalea leaves. There is no infestation at base of bush that I can see.

I could not send pics here but went to my iPhone and thought I sent them from there but I'm not seeing my response registered there so I don't know if you received them.

The white material on the foliage looks like planthoppers. Here is more information on our website. No control is necessary. You can hose them off with a forceful stream of water. https://extension.umd.edu/hgic/planthoppers-flowers

Do not spray an insecticide unless you know what you are spraying for. Sevin is a broad spectrum insecticide that kills everything including beneficial insects.

We notice lacebug damage on the foliage of the azaleas. This can cause leaf yellowing and decline. Also, if the azaleas are located in full sun they will be more susceptible. See our webpage for more information
https://extension.umd.edu/hgic/lace-bugs-trees-and-shrubs

mh

Thank so much for the immediate response and additional information.