I do not spray and never had to in the past but this year I noticed plants that were always healthy losing leaves and becoming naked! No leaves!!! If I did see leaves with some spots I did the the usual and just removed them. This is only on some roses not all, but if its BS I don't want it to spread. I was told however from some of the GWForum members they believe black spot has been ruining my roses.

So from an organic rose book "Growing Roses Organically" author Barbara Wilde it said to "prevent" BS to use skim milk. One part to 9 parts of water - spray foilage once a week. However if there is disease present to use - 1 tablespoon baking soda per gallon of water, add a teaspoon of oil (light horticultural or regular vegetable oil) along with a squirt of mild dish soap - spray both sides of the leaves every 5 - 7 days.

Okay is this the best method, cuz I was also told if I don't get a handle on this, our roses may not make it through the winter.

Many thanks
Chantel :-)

spots of blackspot are usually matte black, roughly roundish, with notched or feathery margins. It starts low on the plant, especially with plants that were heavily pruned in spring, or near old canes. Leaves turn yellow behind the spots and drop usually in a couple of weeks. There are other dark spot diseases that are less harmful. These are more reddish or brown with smoother, more definite margins.

In the East and South, sulfur seems to be the most effective blackspot remedy. See the FAQ.