Anthracnose of Raspberry and Blackberry (2008)
Anthracnose is a disease common to raspberries, blackberries, and other brambles or cane fruits. The disease reduces the size and quality of fruit on infected canes. (HYG-3007-08)
Spur Blight of Red Raspberries (2008)
Spur blight occurs only on red and purple raspberries. Spur blight has been considered to be a serious disease of red raspberry; however, recent studies in Scotland suggest that spur blight actually does little damage to the cane. (HYG-3008-08)
Botrytis Fruit Rot (Gray Mold) of Strawberry, Raspberry, and Blackberry (2008)
Many fungi are capable of rotting mature or nearmature fruits of strawberry, raspberry, and blackberry. One of the most serious and common fruit rot diseases is gray mold. The gray mold fungus can affect petals, flower stalks (pedicels), fruit caps, and fruit. (HYG-3017-08)
Verticillium Wilt of Raspberry (2008)
Verticillium wilt is one of the most serious diseases of raspberry. This disease is caused by a soilborne fungus and reduces raspberry yields by wilting, stunting, and eventually killing the fruiting cane or the entire plant. (HYG-3027-08)
Cane Blight of Raspberries (2008)
Cane blight is one of the more damaging diseases of raspberries. Cane blight can result in wilt and death of lateral shoots, a general weakening of the cane, and reduced yield. It is usually most severe during wet growing seasons. (HYG-3202-08)
Phytophthora Root Rot of Raspberry (2008)
Phytophthora root rot is caused by several related species of soilborne fungi belonging to the genus Phytophthora. Phytophthora root rot can be an extremely destructive disease on susceptible cultivars where conditions favor its development. (HYG-3207-08)
Late Leaf Rust of Red Raspberries (2008)
Late leaf rust is a potentially serious disease of red raspberries. Late leaf rust does not affect black raspberries or blackberries. The disease can affect leaves, canes, petioles, and fruit. (HYG-3210-08)
Orange Rust of Brambles (2017)
Orange rust is the most important of several rust diseases that attack brambles. As the disease develops, the edges and lower surface of infected leaves are covered with blister-like pustules that are waxy at first but soon turn powdery and bright orange. (PLPATH-FRU-30)
Downy Mildew of Blackberry (2018)
Downy mildew of blackberry (Rubus sp.) is a systemic disease caused by the fungal-like
pathogen Peronospora sparsa. Nearly all blackberry cultivars are susceptible to downy mildew. The disease also occurs on boysenberry and youngberry and rose (Rosa spp.). Downy mildew affects both the leaves and fruit of blackberry although leaf symptoms are most common in Ohio. Stunting can occur in infected plants even when foliar symptoms are not visible. Disease is most severe during wet weather with cool to warm temperatures.
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