care of roses - Knowledgebase Question

Fletcher, No
Question by momanddadb
February 24, 2010
I love hybrid tea roses and I have such a hard time maintaining them, especially with black spots and leaves turning yellow and falling off. Which spray can i use and can i mix them all together and spray rather than spraying each one individually?

Answer from NGA
February 24, 2010


A fungus causes black spot on roses. Some cultural practices may be helpful in controlling it. These include planting varieties resistant to the disease, ensuring your plants are in a location with good air circulation, and avoiding wetting the leaves when watering. Clean up and destroy any infected leaves, especially in the fall to minimize reinfection from year to year. A clean layer of organic mulch (such as shredded bark or chopped leaves) applied before the plants leaf out again in spring should also help prevent reinfection. The mulch helps keep fungal spores from splashing up onto the plant and the new foliage. Neem oil may also be helpful. Neem controls aphids and mites on your roses, and also will control powdery mildew and black spot. Be sure to read and follow the label instructions. There are also other commercial fungicides available. Some choices include Funginex, Daconil, Captan, Bravo. Don't mix products together unless the labels recommend doing so! Best wishes with your roses.

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