I had no rust so far in my garden this year, I am really surprised because I had a lot of rust last year, and the year before. I am still thinking the cold winter we had this year must have killed the rust, so maybe for the next few years rust can stay out of my garden. I sprayed for rust the past two years, but did no spraying at all this year. Hoping the alfalfa will help develop nice clumps, with dark green healthy foliage. Now I need at least one more bag.