Downy mildew of lima bean, caused by the oomycete, Phytophthora phaseoli, is a common disease in Delaware production areas. Proper identification and management of the disease is critical for ...

authors of The Green Thumb Garden Handbook. Lilac, a highly aromatic plant, is a common victim of powdery mildew. Problem: Downy mildew is caused by fungus-like organisms and affects many ...