David Owens, Extension Entomologist, owensd@udel.edu
Be sure to scout strawberry plantings for spider mites. Thresholds during the flowering and fruiting stage are 15 – 20 mites per leaflet. Take 10 mid-canopy leaflets (not the full leaf) per acre and count mites. If you count between 150 and 200 mites, a treatment is generally justified.