Weather data for Middletown RI. Forecast values begin September 20, 2011

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
Wednesday, May 4

Optimum monitoring period for 1st generation ERM:
Monday, May 23 (Petal Fall)
to Monday, May 30 (early adults ready to lay eggs for 2nd generation)

Optimum monitoring period for 2nd generation ERM:
Saturday, June 11 (nymphs hatched)
to Saturday, June 18 (egglaying starts for 3rd generation)

Optimum monitoring period for 3rd ERM generation is:
Wednesday, June 29 (nymphs hatched)
to Tuesday, July 5 (egglaying starts for 4th generation)