Q: How do I tell the difference between wild onion and wild garlic?
A: Like edible onions and garlic, wild onion, Allium canadense, and wild garlic, Allium vineale, are members of the onion family. While both have thin, green, waxy leaves, those of wild garlic are round and hollow, while those of wild onion are flat and solid. Leaves of wild garlic are hollow and branch off the main stem. Leaves of wild onion are flat, not hollow, and emerge from the base of the plant. Wild garlic flowers may be green or purple; wild onion flowers are generally white or pink.
Imazaquin (Image Nutsedge Killer) controls both plants. The best time to treat is November and again in early spring. Read label precautions before applying.