Roses have been one of the top favorite flowers of gardeners and most people for a long time with lovely vivid blooms. They can grow well in a variety of environment. However, roses are susceptible to several diseases that can infect them and destroy their beauty. Therefore to produce beautiful roses, these diseases must be identified and dealt with.
1. Black Spot
Black spot is one of the most common and widespread of the diseases in roses. It is characterized by the appearance of black spots on the rose leaves. The infected leaves will eventually turn yellow and finally fall off. This will result in the plant being unable to photosynthesize the nutrients that it needs to live.
To prevent the black spot, allow good air circulation through the leaf by spacing the roses properly. Spray your roses with fungicide every eight to ten days and water them in the early morning. If your rose plant is already infected, trim away the diseased leaves and destroy them.
2. Powdery Mildew
This one is fungal disease. Rose plants infected with powdery mildew have white coating of powder on their leaves, buds, stems or flowers. The leaves become distorted and fall off very quickly.
Try to avoid planting roses in shaded spots as mildew grow well on wet rose plants. Choose a sunny location with good air circulation. Powdery mildew can be controlled by cultivar selection. It is also crucial to prune infected leaves or plants part before it spreads. If the powdery mildew gets out of hand, spray fungicides on the plants regularly.
3. Crown Gall
It is a bacterial disease. The bacterium Agrobacterium tumefaciens attacks the root crown above the soil. The rough galls develop and will interfere with the nutrients flow and water.
Avoid injury to the root crown of the rose plant when planting to prevent this disease from happening. Discard the surrounding soil to ensure that the infected area as well as the plant tissue is removed completely.
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How to Deal with Some Common Diseases of Roses