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Webs on Evergreen Shrubs

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From: Linda Nutting
City:
Belleville, IL
Recently I have noticed my evergreen shrubs are heavily covered with patches of some type of webs. It does not appear to be spiders but I cannot see anything specific that is creating them. I recently trimmed the hedges and with a few days the webs were back. It has been extremely hot and humid here in southeastern Illinois for the past two weeks.

Can anyone tell me what I am dealing with here and how I can rid my hedges of whatever pest has invaded them.

Thanks.

 
Extension Message
From: Greg Stack
Extension Horticulturist
Office of Web Development
gstack@illinois.edu
Hi,

you often see webbing on plants especially evergreens and they can be the result of a variety of insects. For the most part they are of no concern and if the plant is not showing any affects such as foliage damage I would say hose them off on occasion if they are an aesthetic problem.

 
From: Kim Heber
City:
Bridgewater, NJ
I have some small webs on our evergreen tree as well, but I also notice the ends of many branches are chalky white and appear to be sticky. Is this a pest? It was our Christmas tree and was planted in January. It seemed to be doing very well.

 
Extension Message
From: Greg Stack
Extension Horticulturist
Office of Web Development
gstack@illinois.edu
Hi,

chalky white and sticky could be just the presence of resin. If you want to be sure there is no pest problem yo need to take a sample to your local extension office for an accurate ID

 
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