The allicin content in garlic supports normal cholesterol levels, enhances circulation and boosts the immune system. Plant garlic in spring or fall. Largest bulbs (also referred to as heads) are produced from fall planting, but a heavy mulch is necessary in cold areas to prevent frost heaving. Harvest fall planted garlic the following summer. For softneck types, 6 heads will plant about 25 feet of row. For hardneck types, 6 heads will plant about 10 to 15 feet. Separate garlic into cloves just before planting. Sorry, garlic cannot be shipped to AK, AZ, CA, HI, ID or WA.