Natural Guard Neem Concentrate is an effective fungicide for the prevention and control of various fungal diseases such as powdery mildew, black spot, downy mildew, and others as listed on label. Stops powdery mildew in 24 hours. Also controls aphids, spider mites, scale, beetles, and other insects. Kills eggs, larvae, and adult insects. For organic gardening use on fruits, nuts, vegetables, herbs, spices, roses, houseplants, flowers, trees, and shrubs. Used up to the day of harvest. 3 in 1 multi-purpose product fungicide, insecticide, and miticide.