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Pests/Catalpa tree infestation.

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Question
Pests on catalpa tree.
Pests on catalpa tree.  
I live in north Florida, suwannee county. I'm not sure but this looks like scale? Can you identify it and tell me how to treat it!  The main trunk of my little tree has died and now this stuff is spreading... Help!!!

Answer
Ginny,

Yes, this is scale insect. Unfortunately these insects can be fairly difficult to control because of the "shell" they live in. The best time to attempt control is when the young crawler stage is present (see http://www.livingwithbugs.com/sca_ins.html for general info about these insects), usually in early spring. Insecticidal soap (http://www.livingwithbugs.com/insecticidal_soap.html) or neem oil (http://www.livingwithbugs.com/neem_oil.html) would be good materials for this application. It may take several years, and several applications each year, to get complete control.

Jack DeAngelis

Pests

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Jack DeAngelis

Expertise

I can answer questions in any area of entomology (study of insects, spiders, mites, ticks, and other terrestrial arthropods). Contact me about home and garden insects such as aphids and spider mites, insects that bite and sting such as ticks and wasps, and insects that damage homes such as carpenter ants and termites.

Experience

20 years as university extension entomologist, now retired; currently publish a website about home and garden insects.

Organizations
see www.livingwithbugs.com/resume.html

Publications
see www.livingwithbugs.com/resume.html Fine Gardening magazine

Education/Credentials
Ph.D. in Entomology (the study of insects)

Awards and Honors
see www.livingwithbugs.com/resume.html

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