Plant individual cloves of garlic now and they will grow into full heads by next spring. Choose the largest cloves and leave the natural papery wrappers on them. Plant them in moist, well-drained soil in a sunny location with the pointy tips up, about one inch deep. Space cloves about four inches apart to leave room for large heads to develop.
The UCCE Master Gardeners of Napa County have more information about Growing Garlic.