January 3, 2017
Donald C. Booth, Ph. D., Entomologist
Emerald ash borer (Agrilus planipennis) was first discovered in southeastern Michigan in 2002 and
has been since identified in eleven (11) adjacent states including IN, OH, IL MN, PA MD, WI, KY, MO, NY and WV. This beetle has also been found in Windsor, Canada. This bo...
Verticillium wilt of trees and shrubs
Verticillium wilt is caused by the soil-borne fungi, Verticillium albo-atrum and Verticillium dahliae. However, V. dahliae is the species that most commonly attacks woody ornamentals in the United States.
January 1, 2017
Tiny green, brown or black insect often found on the undersides of leaves and on the buds.
Feeds on plant causing stunted growth, and curled or distorted foliage, produces a sticky sap called honeydew.
Can be controlled by spraying with a strong stream of...