Walking Stick Tree Diseases

On hazelnuts native to wisconsin such as american hazelnut corylus americana and beaked hazelnut corylus cornuta the disease causes little significant damage but on the commonly grown european hazelnut corylus avellana including harry lauder s walking stick corylus avellana contorta the disease is lethal.

Walking stick tree diseases.

Some harry lauder s walking stick plants corylus avellana contorta are being attacked and are dying slowly. One disease of particular concern is eastern filbert blight. It is a cultivar of the tree species european filbert and a close relative to american hazelnut and turkish filbert. Learn more about monrovia plants and best practices for best possible plant performance.

Branch dieback occurs when cankers girdle the stems. It is a small tree or large shrub that grows up to 8 feet in height and spread but can be kept smaller with pruning. No serious disease or insect problems. It occurs primarily in the eastern half of the country as well as oregon.

Botanically known as corylus avellana contorta harry lauder s walking stick is one of the most interesting interesting plants you can put in your landscape and probably one of the least understood. Occasional disease problems include black knot crown gall apple mosaic virus and leaf spot. Look also for cankers on limbs especially in the upper canopy. You are most likely dealing with eastern filbert blight a disease.

Tree plant care. Common pests diseases this shrub has good resistance to the filbert blight that can devastate other members of the genus. This wonderful plant with it s array of twisted and contorted branches will happily grow in zones 4 through 8 and is one of the few plants that really has no serious disease or insect pest problems. All you can do is scout for the stromata masses of fungal tissue that looks like alligator skin on branches stems.

Henry lauder s walking stick infected with eastern filbert blight is probably too sick to save. If you see this prune them out one to three feet below where they stop on a branch. Note that this plant can spread indefinitely. Typically growing as understory or at wood edge in large thickets.

Monrovia s harry lauder s walking stick details and information. Prune out shoots to maintain the spread of the plant within desired size. Disease pests and problems. Tolerant of most sites best in full sun to light shade under tall trees.

This doesn t seem to be a widespread problem but it is happening. Affected branches should be removed and destroyed but viruses in particular are very hard to treat.