Dormant

Black knot. Black knot. Early season fungicide sprays during rapid growth are most important in controlling black knot. Bravo is one of the more effective fungicides. Cut the branch 6 to 8 inches below the visible swollen portion before bud swell begins. Knots on the trunk and main limbs usually can be removed successfully by cutting off the knot growth beginning in August and throughout the dormant season. All infected material should be removed from the orchard. Remove infected wild cherries from fence rows and nearby wooded areas.

Brown rot. In a mixture of varieties, with some blooming early, add a fungicide to the oil at the prebloom rate.

Scales. Lecanium scale and San Jose scale: apply Esteem at 4.0 to 5.0 ounces with oil. Use higher rate of Esteem under heavy scale pressure.

Pesticide Recommendations for Plum and Prune, Dormant