A number of diseases affect the rose plant. Sudden climatic changes make them prone to pests. The indigenous variety of roses have the most immunity against diseases. Cross breeds are more likely to be affected by diseases and hence proper and timely care should be given to them.
One of the most common problems affecting the rose plant is the black spot. As the name suggests, black spots appear on leaves. The affected leaves fall off quickly. This is the primary symptom of the disease. It is a kind of fungal infection caused by increase in atmospheric humidity. If proper care is not given at the right time the plant withers and dies. The first step to be taken in case of the Black Spot is to cut off the affected leaves. Mix two grams of fungicide in one liter of water and spray this mixture on the affected plant. Another major disease affecting the plant is the phytoplasma which affects the stem of the plant. The microbes attach themselves to the stem of the plant. This results in drying of the stem, ultimately leading to plant decay. The symptoms include small white spots on the stem on careful examination. The best remedy for this is to sprinkle spirit on the affected area. Another type of disease affecting rose plants are stunted leaves. Mites and thrips are the pathogens of this disease . This is one of the most dangerous diseases affecting the plant. So it is necessary to ensure that such diseases are prevented. This in turn makes it necessary to keep the plant away from disease-causing pathogens. The insects found beneath the tender leaves and buds start feeding on the plant juice . To prevent this disease, the pot and the mixture in it should be kept clean.Another symptom of this disease is the appearance of grey lines on the tender leaves and buds and stunted growth. The affected parts should be removed without delay. After that, 5 to 7 drops of Imidacloprid insecticide mixed in 1 liter of water should be sprayed on the plant. We must make sure that the mixture is properly applied below the leaves and the stem. This mixture should be sprinkled on the affected plant three times a day, every three days. Another disease carrying agents are bugs that attack the plants after dark. These bugs feed on the leaves and buds of the rose. An insecticide Monocrotophos can be sprayed on the plant to protect them from bugs. It should be sprayed in the evening after watering the plants. This will ensure that the dosage does not adversely affect the plant health. Stem drying is another disease affecting the plant. This disease spreads when fungus and other pathogens enter the plants’ system from the node. The primary symptoms of this disease are blackened and dried stems. The primary step is to remove the affected part of the plant. Then spray a mixture of insecticides and pesticides on it after watering the plant.
These are the five main diseases that affect the rose plant. Proper care and nurturing will help us notice the slightest changes happening to these plants, and helps identify the symptoms, thus enabling us to provide appropriate care when needed. Special care should be given to the cross breeds as they are less immune to diseases. It is always better to grow a selected range flowers and look after them properly.