Defender PM - 1 gallonDefender PM is a citrus oil based foliar fungicide made to kill powdery mildew spores on contact. It is made with food grade ingredients and will not persist on plant leaves. Defender PM is not a systemic fungicide ; it works on contact to smother Erysiphales spores the order of fungi that cause powdery mildew. Use this botanical oil product in all growing methods and on any food crop. It is effective for both preventative treatments and to suppress