Weather data for Greenville RI. Forecast values begin May 21, 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
Monday, April 16

Optimum monitoring period for 1st generation ERM:
Thursday, April 26 (Petal Fall)
to Friday, May 18 (early adults ready to lay eggs for 2nd generation)

Optimum monitoring period for 2nd generation ERM:
Friday, June 1 (nymphs hatched)
to Friday, June 8 (egglaying starts for 3rd generation)

Optimum monitoring period for 3rd ERM generation is:
Tuesday, June 19 (nymphs hatched)
to Friday, June 29 (egglaying starts for 4th generation)