Black Knot Disease of Plum and Cherry Trees

Black Knot Disease otherwise known as Dibotryon morbosum, is a serious, yet fairly common fungal disease of plums and cherry trees (including choke cherries). Other members of the Prunus family (like peaches, nectarines, apricots and almonds) can also be affected but it is less common. The affected trees develop hard, black elongated swellings, called knots, thus the name black knot. These knots are scattered throughout … Continue reading Black Knot Disease of Plum and Cherry Trees

Eastern Filbert Blight On Harry Lauder’s Walking Stick

Eastern Filbert Blight is a disease caused by the fungus – Anisogramma anomola and is native to the northeastern United States and eastern Canada (although it has appeared in British Columbia, as early as 2001). Hazelnuts native to this region (Corylus americana) have proven to be more resistant to the disease (some are even immune) than the imported European hazelnuts (Corylus avellana). For Harry Lauder’s Walking Stick, a contorted hazelnut (Corylus avellana … Continue reading Eastern Filbert Blight On Harry Lauder’s Walking Stick

Boxwood Blight Verses Volutella Blight; Symptoms, Causes and Treatment

Boxwood Blight Symptoms and Causes Boxwood Blight (also known as Cylindrocladium buxicola) is an aggressive fungal disease caused by the fungi Calonectria pseudonaviculata.  This disease strikes healthy Boxwood, quickly causing mass defoliation. You will typically see Boxwood Blight flair up during rainy or humid seasons, where the leaves stay wet for extended periods of time. If the fungi is present during ideal conditions it will begin … Continue reading Boxwood Blight Verses Volutella Blight; Symptoms, Causes and Treatment