Camellia: Brown soft scale
Photo by: R.S. Byther
Biology
Brown soft scales are yellowish to dark brown insects (adults are usually darker). They are found mainly on twigs, although young scales may also be found on the foliage, typically on the underside of leaves.
Soft scales produce large amounts of honeydew, a sweet, sticky material which may become covered with a growth of dark sooty mold.
Heavy scale infestations can cause plants to become yellowish and wilt in appearance.
Management Options
See "Using Integrated Pest Management (IPM) in the Landscape" for successful problem management techniques.
Non-chemical Management
Select non-chemical management options as your first choice!
- Ladybird beetles and parasitic wasps help control scale populations.
- Minor infestations may be wiped off by hand.
- If practical, prune and destroy heavily infested branches.
Chemical Management
IMPORTANT: Always read and follow label directions when working with pesticides.
For more information on using pesticides visit :
- Scout for crawlers.
- Insecticide applications can be effective when applied to control the immature crawlers stage, usually in late spring to early summer.
- Oils are effective in the delayed dormant period.
- Use oil sprays only on overwintering nymphs.
- Test for sensitivity on camellia before applying insecticidal soaps.
Approved Pesticides
If you choose to use a pesticide, some examples of products that are legal in Washington are listed below. Some products are labeled for just INDOOR or just OUTDOOR use, or may allow both uses. Be sure to choose a product appropriate for your situation. Always read and follow all label directions.
WSU Extension programs and employment are available to all without discrimination.
Evidence of noncompliance may be reported through your local Extension office.