A number of ornamental and edible plants are susceptible to this fungal disease, which can persist in the soil for many years. Each plant genus […]
Chuyên mục: DISEASE
DISEASE
Delphinium black blotch
Delphiniums are striking border plants but can be attacked by black blotch, an unsightly disease that can affect all aerial parts of the plant. What is delphinium […]
Damping off
Damping off is a disease of seedlings caused by several different fungi and fungus-like organisms. This disease causes emerging seedlings to collapse, often submerged in […]
Daffodil viruses
Several viruses affect Narcissus (daffodil), the most common being Narcissus yellow stripe virus. This causes yellow streaks on the leaves, lack of vigour and leaf and stem distortion. […]
Cyclamen grey mould
Cyclamen are particularly susceptible to grey mould caused by Botrytis cinerea. This causes a grey fuzzy mould on infected plant parts, and also attacks the stalks […]
Currant and gooseberry leaf spot
This is a fungal disease that attacks the foliage of currants (black, red and white) and gooseberries in summer, and can be troublesome in some […]
Cucumber mosaic virus
Cucumber mosaic virus (CMV) is one of the most common plant viruses, causing yellow mottling, distorted leaves and stunted growth in a wide range of garden […]
Crown gall
Crown gall is a bacterial disease of the stems and roots of many woody and herbaceous plants, including fruit, vegetables and ornamental plants. Infection with […]
Cornus anthracnose
Cornus anthracnose is a fungal disease that kills the leaves and young shoots of some North American Cornus species (dogwoods). Infections cause dead blotches on leaves and die-back […]
Cordyline slime flux
RHS Gardening Advice received hundreds of enquiries in 2011 about cordylines that were badly affected by the cold weather the previous December. As well as […]