Remove and destroy infested foliage. Dust plants with sulfur powder every one to two weeks, starting when foliage begins to develop in the early spring and continuing throughout the growing season. The sulfur won't kill the rust, but it will prevent the next generation from germinating. Spray with a solution of 1 tsp. Rust is very difficult to eliminate once it appears.
Prevention is the best form of defense.
Spray organic fungicides early in the day for best results. Chemical fungicides are available for the control of rust. Always use the least toxic method of pest control first. Inc. How things get done. Use of this Web site constitutes acceptance of the eHow Terms of Use and Privacy .