What can i do in rainy weather for black spot and rust on my roses?
Remove all fallen leaves and any infected leaves left on the plant . If rust pustules appear on the canes, prune all infected canes. If disease is severe, chemicals for good control of black spot and powdery mildew as well as rust are triforine (Funginex), sulfur, or lime sulfur. Milk will get rid of black spot, which is a fungus. Use it as weak as a 1 part milk to 9 parts water. It has potassium phosphate, which boosts the plant’s immune system which helps a plant fight off fungi. It has been found to be more effective than the standard chemical fungicides. I bought infected roses for $2 from two stores. Picked off & discarded all the diseased leaves & sprayed on a weak milk & water solution. I watered only in the morning so the leaves had time to dry.The roses grew new healthy leaves & blossomed beautifully. It’s now a yr. later, & not a sign of black spot & the roses are healthy!!! Milk is a natural germicide. In addition, it contains several naturally occurring salts and amino acid
