What is Fire Blight? It is a destructive bacterial disease that affects plants in the rose family, including pear, crabapple, mountain ash, apple, rose, and spirea. Fire blight is caused by a bacteria called Erwinia amylovor. Appearance It gets its…
Wisconsin winters can be harsh and Evergreens are resilient when it comes to battling the bitter cold, but that doesn’t mean they can’t be damaged. Giving them added protection can help beat out disease and future damage. Winter Burn on…
Needlecast is a fungal disease commonly found on blue spruce trees that will cause needles to turn brown, fall off and leave bare patches to the tree. It can also be found on fir, pine and hemlock species. Typically symptoms…
What is it? Boxwood blight (also known as box blight and boxwood leaf drop) is a devastating fungal disease caused by the organism Cylindrocladium Buxicola and thrives in humid, warm conditions. Its contagious to other plants and ruins the appearance…
Black knot is a common fungal disease of Prunus trees including ornamental, edible, and native plum and cherry trees. They are hard swollen black galls (tumor like growths) that form on branches and occasionally on the trunk of the tree. Depending on how…