University of California
The California Backyard Orchard
Red Scale Degree Day Update June 11
Degree days are about 1 week behind the 30 year average. This year in Tulare County, the first male flight occurred in mid-March, the first crawlers appeared in mid-May, and this week as the degree days approach 1100, the 2nd flight of male scale has begun.
Kern: 1089
Tulare: 1051
Fresno: 1036
Madera: 915