Cottony Camellia Scale
Trees at Risk
Common hosts of the cottony camellia scale include: camellia, holly, yew, euonymous, maple, mulberry, hydrangea, rhododendron, and English ivy.
Signs of Damage
- Light green leaves.
- The insect is 1/8 inch long, oval, yellowish tan, with a brown margin.
- Forms cottony ovisac.
- Often on the underside of foliage.
- Sooty mold is often associated with CCS.
- Scales are cream to tan and elongate oval and relatively flat body.
- Young females have a dark stripe down the middle and mottling at the sides.
- Older scales are dark brown.
- Eggs are laid in an ovisac produced beneath and behind the female.
- Ovisacs are two or more times longer than the scales and are relatively flat, white, and fluffy.
- Cottony ovisacs are laid in May.
- Crawlers hatch in late May/June.
- Female insect overwinters as instars.
- Females mature in spring and lay eggs.
- One generation per year.
This is not an overly difficult insect to control. It is capable of laying up to 1,000 eggs at a time though, so monitoring is important. Large populations of scales are more difficult to control.
Other Treatment Practices
Maintain plant health and monitor closely for this insect.