Rust on Roses
Is rust the same as black spot? I think I have rust on my roses. I have a recipe for a spray, 1 tsp baking soda to 1 quart warm water, with 1 tsp insecticidal soap to help the solution stick. Has anyone tried this? I don't have any of the insecticidal soap, is it necessary, or anything else I could use, I do have some Therm X70 (yucca extract) that I use when I make my foliar spray to help it stick.