HARVESTING GARLIC HEADS... Most “experts” say to harvest when several of the lower leaves go brown, but five or six up top are still green—and depending on the weather. Do not pull garlic out by the stems, use a spade to dig them out. Once unearthed brush off dirt as best you can and hang in a airy, dry place for a minimum of 2 weeks. It is important to keep them out of direct sunlight.