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Woody shrub disease #752651

Asked May 28, 2021, 2:50 AM EDT

What kind of insect/bug has a hard shell and attaches itself to the branches of a row of shrubs. They are really infested and the branches are dieing. The hedge row faces east in front of a stone building. Can you identify the shrub also. There is also a bug in one of the pictures. Thanks for your help.

Franklin County Ohio

Expert Response

OK still working on the question.

On Fri, May 28, 2021, 2:42 PM Ask Extension <<personal data hidden>> wrote:

MGV Seneca County Replied May 29, 2021, 7:01 AM EDT

Great question.

The bush in question appears to be a Spiraea perhaps Spiraea nipponica or Spiraea vanhouttei.

The insect from what I can see is a type of scale insect that attacks trees and shrubs. Some may be difficult to control as several have hard shells which help protect the insect. A possible treatment is to spray the shrub with Neem Oil which can plug their breathing tube. If you should decide to use this or other treatment READ and FOLLOW the label directions!

I have listed below several links that may assist you in your problem. Also listed is your County OSU Extension Service should you want to contact them for further assistance. Thank you again.

Thank you for allowing us to help you with your gardening questions. Here are some other helpful websites:
BYGL Newsletter: http://bygl.osu.edu/
OSUE FactSheets: ht tp://ohioline.osu.edu
State Master Gardener Volunteer website - http://mastergardener.osu.edu