Lime sulfur is made by boiling lime and sulfur together. This mixture is used as a dormant spray for fruit trees to control such diseases as blight, anthracnose, powdery mildew, and certain insects such as scales, eriophyid mites, and spider mites.
Lime sulfur's drawbacks include smelling like rotten eggs, burning exposed skin and eyes and causing plant injury if applied when temperatures exceed 80 F.