Weather data for Monmouth ME. Forecast values begin September 3, 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, May 13

Optimum monitoring period for 1st generation ERM:
Tuesday, May 27 (Petal Fall) to
Sunday, June 8 (early adults ready to lay eggs for 2nd generation)

Optimum monitoring period for 2nd generation ERM:
Saturday, June 21 (nymphs hatched) to
Saturday, June 28 (egglaying starts for 3rd generation)

Optimum monitoring period for 3rd ERM generation is:
Tuesday, July 8 (nymphs hatched) to
Wednesday, July 16 (egglaying starts for 4th generation)