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Euonymus japonicus #938593

Asked July 08, 2026, 5:39 PM EDT

Have a heavy infestation of small white insect (scale?) o this plant. Will try and attach photo. What do I do? Will it spread to other plants? Take it out or treat it? First time in 9 years

Clackamas County Oregon

Expert Response

Thank you for your question, Nancy.  The primary pest of this species is scale, discussed and pictured in this article:  
 https://ipm.ucanr.edu/home-and-landscape/euonymus-scale/#gsc.tab=0

Obviously, we can’t guarantee this is what is infesting your plant, but the control mechanisms are the same here as in California.  Good luck!
An Ask Extension Expert Replied July 08, 2026, 6:08 PM EDT

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