Timing Treatment
Dormancy delayed dormant (early spring) Foliar Copper sprays.
Petal fall
Shuck split
when conditions favor disease.
Post-bloom
(mid summer) 
at weekly intervals as disease conditions warrant.
Post harvestdormancy
(late fall – winter)
Pruning to remove overwintering of cankers from trees.


Note: Check with your local extension agent and/or Pest Control Advisor for specific recommendations.