Weather data for Greenville 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
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:
Tuesday, May 29 (nymphs hatched)
to Tuesday, June 5 (egglaying starts for 3rd generation)

Optimum monitoring period for 3rd ERM generation is:
Sunday, June 17 (nymphs hatched)
to Wednesday, June 27 (egglaying starts for 4th generation)