24-27 days. Green garlic can be stored at room temperature for three to five days, and it can be stored in the freezer for 24-27 days. The cold storage temperature of green garlic is about degrees Celsius, and the air humidity should be maintained at 95%. Green garlic should be wrapped and sealed with plastic wrap before it is put into the refrigerator to prevent it from touching the inside of the refrigerator, causing it to freeze, rot and deteriorate.