San Jose Scale Lure

San Jose Scale Lure

Regular price$3.50

Latin Name: Quadraspidiotus perniciousus

Recommended Trap: Scale Card

Field Life: Change the lure every 8 weeks

Application Notes: Utilize at least 3-4 traps, regardless of the size of the orchard. Install traps in orchards at the pink stage of apple fruit bud development. Set traps on the north or east side of the tree at a height of 6 to 7 feet. Monitor traps regularly (every day or two) until the first male scale is captured. 


Technical Bulletin

MSDS Sheet

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San Jose Scale, Quadraspidiotus perniciosus.

Found in most areas of the world.

Pest of Apples, peaches, pears, plums and Rubus. Found in most areas of the world.

Overwinters in the nymph stage. Expect more scale issues following mild winters. After progressing through larval and pupal stages, males mature and emerge from their scales approximately 4 to 6 weeks post-birth. Adult males have a flight span of only a few days and can mate immediately with females, who stay beneath their scales. Each female generates several hundred live crawlers within a 6-week span. The timing of these stages tends to vary annually, influenced by temperature fluctuations. Typically, crawlers from the first generation emerge in early June and production may extend until early August. These young crawlers can be transported to other trees by wind, on birds' feet, on the clothing of farm workers, or via orchard equipment. Females from the first generation mature by late July, with second generation crawlers emerging in August. The production of second generation crawlers persists until October or November.


Scale Card

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