How to grow garlic.
"When should I plant garlic? Garlic requires a cold treatment to do well, and the biggest, most robust bulbs are produced from a fall planting. Besides, that’s the only time planting stock is readily available. So if you haven’t already ordered your garlic, do it now! Your goal should be to plant within two weeks of the first frost (32°F) so that the cloves develop roots but do not emerge above ground by the time of the first hard freeze (28°F)."