I use lime sulfur spray "neat" [no dilution] as a deadwood preservative on my Bonsai. It not only preserves the wood but also bleaches the wood giving it an aged and weathered look. We were glad to find available on the internet since none of our local nurseries carry it any more.
Awesome product. Applied as directed on my roses. The blackspot stopped moving to new leaves. Cleaned the roses up and black spot has become a minor issue. I have around 14 rose plants some over 7 foot tall.
I used a fungicide from the local Walmart and it didn't help with the rust spot on my holly-hock, I ordered sulfur from your Co and it didn't seem to help either . I keep taking the effected leves off from the plant thinking it would get the infected leves away from the plant. I did get a few blooms