Weather data for Middletown RI. Forecast values begin May 22, 2012

Key Dates for European Red Mites

Estimated hatch date of overwintered European red mite (ERM) eggs
and decline in efficacy of suppression by prebloom oil is
Tuesday, April 17

Optimum monitoring period for 1st generation ERM:
Tuesday, May 8 (Petal Fall)
to Thursday, May 24 (early adults ready to lay eggs for 2nd generation)

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

Optimum monitoring period for 3rd ERM generation is:
Wednesday, June 20 (nymphs hatched)
to Thursday, June 28 (egglaying starts for 4th generation)