Viral diseases are infectious disorders caused by small intracellular parasites, which need host cells to survive. Viruses are usually transmitted by insects and mites to plants. Some viruses are serious plant pathogens such as rose rosette virus or tobacco rattle virus.
Typical leaf symptoms of viral diseases include mosaic patterns, chlorotic or necrotic lesions (Figure 13), yellowing, stripes or streaks, vein clearing, vein banding, and leaf rolling and curling.
Remove all infected plants and destroy them. Do NOT put them in the compost pile, as the virus may persist in infected plant matter. Burn infected plants or throw them out with the garbage. Monitor the rest of your plants closely, especially those that were located near infected plants. Disinfect gardening tools after every use. Keep a bottle of a weak bleach solution or other antiviral disinfectant to wipe your tools down with.
Already a member? Sign In