Onion Disease: Downy Mildew

SKU A3860

Author(s) Karen Delahaut, Walt Stevenson.

Downy mildew is a destructive disease that can reduce yield and bulb quality of onions, garlic, leeks, shallots, and other alliums. Find out how to identify downy mildew, reduce the chances of disease introduction, and slow disease development (2 pages; 2009).