University of California
The California Backyard Orchard
Degree Days are Accumulating Very Slowly
If you look at the current degree days for California red scale in the Lindcove area, we are about 125 degree days behind the 30 year average. In that region, we are accumulating about 10 DD per day and so we are about 2 weeks later than 'normal'. Be sure to follow degree day units either using the web site or your own temperature units to determine the best time to spray (for most insecticides, 550 degree days after the 1st or 2nd male flights).
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