Ultra-Pure Oil Horticultural Insecticide, Miticide and Fungicide can be used year-round (temperatures between 32F and 85F) to control insects, mites, and fungus. This Ultra-Pure Oil is safer for plants because it is 99% pure unsulfonated residue. Ultra-Pure Oil Horticultural Insecticide, Miticide and Fungicide works on all developmental stages of listed mites and insects. With no known resistance, no post-harvest restrictions, and almost completely odor-free Ultra-Pure Oil Horticultural Insecticide, Miticide and Fungicide provides excellent control for disease and pests while reducing the possibility of phytotoxicity.