How to Stop Fungus on Rose Plant Leaves
The most famous, and feared, of all rose diseases is black spot. This fungal infection, which shows up in the summer, appears as round black or deep purple splotches on the rose's foliage. It eventually kills the infected leaf, and can defoliate the entire shrub. Powdery mildew is another common fungal disease of roses. The signs of this disorder are white powder on the leaves and young rose buds. Other fungal diseases include rust, downy mildew and botrytis blight. Does this Spark an idea?
Instructions
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1
Remove all infected leaves from the plant and the soil around the plant. Bag the foliage and remove it from the garden.
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2
Provide air circulation around the rose bush by pruning overhanging tree limbs and moving plants that are within a 3-foot radius of the rose.
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3
Water at the soil, not overhead. Use drip irrigation or a soaker hose to avoid splashing the soil onto the foliage.
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4
Prune diseased canes in the fall. Cut the cane until you see healthy wood and then cut 2 more inches into that wood.
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5
Spray the leaves with a fungicide every seven to 10 days. While the fungicide won't cure an infection, it will prevent one. Check the label of the fungicide to make sure it is safe to use on rose foliage.
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