Nature's Way Fungus Spray protects against a very wide range of fungal and bacterial diseases. It is formulated from copper and sulphur, two naturally occurring compounds. Controls powdery mildew, leaf curl, black spot, early and late blight, bacterial spot, stonefruit blast, verrucosis, brown rot, melanose, downy mildew, rust and bacterial blight. It can be used on all ornamentals, fruits and vegetables. There is no withholding period so it can be used right up until harvest.