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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.

Physical Appearance

  • 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.

Biology

  • 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.

Treatment Strategy

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.

Products

Xytect 2F

Transtect

Distance Hortic