Weather data for Middletown RI. Forecast values begin September 2, 2008

Key Dates for European Red Mites

Estimated hatch date of overwintered European red mite (ERM) eggs indicating declining efficacy of prebloom oil treatment is
Tuesday, April 29

Optimum monitoring period for 1st generation ERM:
Saturday, May 17 (Petal Fall) to
Monday, June 2 (early adults ready to lay eggs for 2nd generation)

Optimum monitoring period for 2nd generation ERM:
Monday, June 9 (nymphs hatched) to
Friday, June 13 (egglaying starts for 3rd generation)

Optimum monitoring period for 3rd ERM generation is:
Friday, June 27 (nymphs hatched) to
Tuesday, July 1 (egglaying starts for 4th generation)