Weather data for Monmouth ME. 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
Sunday, May 15

Optimum monitoring period for 1st generation ERM:
Monday, May 30 (Petal Fall)
to Tuesday, June 7 (early adults ready to lay eggs for 2nd generation)

Optimum monitoring period for 2nd generation ERM:
Friday, June 24 (nymphs hatched)
to Friday, July 1 (egglaying starts for 3rd generation)

Optimum monitoring period for 3rd ERM generation is:
Monday, July 11 (nymphs hatched)
to Monday, July 18 (egglaying starts for 4th generation)