How to Grow Garlic: Plant in Fall, Harvest in July

Garlic is the crop that rewards you for doing almost nothing. You plant it in October, forget about it through winter, cut one stalk in June, and dig up a year’s supply in July. The only thing it will not forgive is planting at the wrong time.

Hardneck or softneck?

This is the only decision that really matters, and it is decided by your winter.

Hardneck varieties (Rocambole, Porcelain, Purple Stripe) need a genuine cold period. They produce a stiff central stalk, fewer but larger cloves, much better flavour, and edible scapes in June. They keep 4–6 months.

Softneck varieties (Artichoke, Silverskin) are what supermarkets sell. They tolerate mild winters, produce more, smaller cloves per bulb, store up to 9 months, and have flexible necks you can braid.

When to plant, by zone

Garlic wants to grow roots before winter and no more than an inch or two of top growth. That means planting 4–6 weeks ahead of your first hard freeze.

Preparing the bed

Garlic is in the ground for three seasons, so the bed is worth doing properly once.

Pick the sunniest spot you have — six hours minimum. Garlic will not tolerate wet feet, so if your soil is heavy clay, plant into a raised bed or a mound. Fork in 2–3 inches of compost or aged manure and rake it level. Do not plant garlic where onions, leeks, or garlic grew in the last three years; white rot builds up in the soil and it is effectively permanent once established.

Through the winter and spring

Nothing needs doing until the shoots appear. Some varieties push green tips up before the first snow; that is normal and the tips will survive being frozen.

Once shoots are about 6 inches tall in spring, pull the mulch back slightly and feed with something nitrogen-rich — blood meal, feather meal, or a balanced organic fertiliser. Garlic builds its leaves in spring, and every leaf is a wrapper on the finished bulb, so this is the feed that decides your bulb size.

Water an inch a week if rain does not deliver it, and keep the bed weed-free. Garlic has thin, upright leaves that cast almost no shade, so it loses to weeds badly.

Then stop. Two to three weeks before you expect to harvest, cut off water entirely. Wet soil at the end produces stained wrappers and bulbs that rot in storage.

Harvest and curing

Watch the leaves, not the calendar. When the bottom three or four leaves have browned and five or six remain green, it is time. Wait longer and the wrappers split, exposing the cloves and ruining storage life; lift too early and the bulbs are small and never cure properly.

Loosen the soil with a fork several inches away from the plant, then lift the whole thing by hand. Never pull by the stem — you will separate it from the bulb and the plant will not cure.

Do not wash them. Brush the loose soil off, leave the roots and stems on, and hang or lay the whole plants somewhere dry, shaded, and well-ventilated for two to four weeks. They are cured when the neck is dry and papery all the way through. Then trim the roots close, cut the stems to an inch (or braid softnecks), and store somewhere dark at 55–65°F.