Plant Disease Type:
Unknown |
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| This disease
attacks: |
mainly citrus plants
attaches to woody part of vines |
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| General Information
about
Cottony cushion scale : |
-lives on citrus plants or on woody part of vine in my case
-looks like barnacles (peach or light orange colored)
-5mm to 8mm long
-ooses bright orange liquid when removed from plant (that's the egg sac that bursts)
-white hairs or "cotton-like" fibers that attach to plant are always longer on one end, creating about a 45 degree angle of attachment. These are the adult female egg sacs.
I found out what this is from the Department of Agriculture!
You can find out all about them from the University of CA and their Statewide Integrated Pest Management Program on this website:
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7410.html
| This plant disease
can commonly be found in these places: |
outside - sunny to partial shade
Central Coast California
| How to get rid
of or kill this disease: |
Do not use insecticides! Especially imidacloprid (Merit); it kills most scales, but not cottony cushion scale. More importantly, it kills vedalia beetles.
Cottony cushion scale is usually naturally controlled by two introduced natural enemies: the red and black vedalia beetle, Rodolia cardinalis and the parasitic fly, Cryptochaetum iceryae.
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| Comment:
Cottony cushion scale |
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