Weather data for Greenville 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
Friday, April 29

Optimum monitoring period for 1st generation ERM:
Friday, May 13 (Petal Fall)
to Friday, May 27 (early adults ready to lay eggs for 2nd generation)

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

Optimum monitoring period for 3rd ERM generation is:
Friday, June 24 (nymphs hatched)
to Thursday, June 30 (egglaying starts for 4th generation)