Schedule your harvest effort for between early spring and mid-summer, adjusting the schedule for local climate. If you live in a cooler area, such as Vermont or Maine, set out to harvest the garlic later in the season, as the garlic will mature later.
Identify the wild garlic plants. They have long, green, hollow blade-like leaves that bear some resemblance to chives. When wild garlic is in bloom, the plant's leaves are topped by white flowers.
Kneel or squat in front of the patch of wild garlic and cut the individual leaves from the plant as close to the ground as possible. If the wild garlic has blossomed, keep the flowers as well as the green leaves and blades.
Place the wild garlic in a collecting bag or basket. Once you have taken the wild garlic home, store it in a cool, dark place until you are ready to use it.