Garlic might be the easiest serious crop in gardening: plant one clove, ignore it most of the year, harvest a whole bulb. The core of learning how to grow garlic is timing — it's planted in autumn, unlike almost everything else, because it needs winter cold to split into cloves.
Garlic Quick Facts
| Factor | Details |
|---|---|
| Difficulty | Very easy |
| Time to harvest | 8–9 months (autumn to midsummer) |
| Sunlight | 6+ hours full sun |
| Soil pH | 6.0–7.0 |
| Spacing | 15 cm (6 in) apart |
| Chill requirement | 4–8 weeks below 10°C (50°F) |
Hardneck vs Softneck Garlic
- Hardneck: best for cold climates; produces edible flower stalks (scapes); bigger cloves, stronger flavor; stores 4–6 months.
- Softneck: best for mild climates; no scapes; stores 9–12 months; the braidable type in supermarkets.
When to Plant Garlic
Plant in autumn, 4–6 weeks before the ground freezes — roots establish before winter, then cold triggers clove division (vernalization).
| Region | Planting Window |
|---|---|
| Northern Hemisphere (temperate) | September–November |
| Southern Hemisphere (temperate) | March–May |
| Mild-winter climates | Plant latest-autumn; or chill bulbs 4–6 weeks in the fridge before planting |
| Tropical climates | Challenging — use pre-chilled softneck cloves in the coolest season |
How to Plant Garlic: Step by Step
- Source seed garlic from a garden supplier — supermarket garlic may be treated against sprouting and carry disease.
- Break bulbs into cloves just before planting; keep papery skins on. Use the biggest cloves (big clove = big bulb); eat the small ones.
- Plant pointy end up, 5 cm (2 in) deep, 15 cm (6 in) apart, in full sun with good drainage.
- Mulch with 5–10 cm of straw or leaves for winter protection.
- Green shoots may appear before winter — that's fine and normal.
Garlic Care
- Spring: Water when dry; feed once or twice with nitrogen early in spring.
- Weed well — garlic hates competition.
- Scapes (hardneck only): In late spring, curly flower stalks appear. Snip them off so energy goes to the bulb — then eat them; sautéed scapes are a delicacy.
- Stop watering 2 weeks before harvest.
When to Harvest Garlic
Harvest when the lower third to half of leaves have yellowed but upper leaves are still green — usually early-to-mid summer. Too early = small bulbs; too late = cloves burst their wrappers and store poorly. Loosen with a fork and lift gently — never pull by the stem.
Curing: hang bulbs (leaves on) in a dry, airy, shaded spot for 3–4 weeks until skins are papery. Then trim and store cool and dry.
Health Benefits of Garlic
Garlic's signature compound allicin (released when cloves are crushed) has been studied for immune support, blood-pressure and cholesterol effects. Tip: crush garlic and wait 10 minutes before cooking — heat destroys the enzyme that forms allicin, so the wait maximizes the benefit.
Common Garlic Problems
| Problem | Cause | Fix |
|---|---|---|
| Small bulbs | Small cloves, late planting, weeds | Big cloves, autumn planting, weed control |
| No clove division | Insufficient winter chill | Pre-chill cloves in mild climates |
| Rust (orange leaf spots) | Fungal, humid weather | Remove worst leaves; rotate beds yearly |
| Rotting cloves | Waterlogged soil | Raised beds; better drainage |
Find your region's garlic planting month on our crop calendar.
Frequently Asked Questions
Can I plant garlic in spring? +
You can, but bulbs will be smaller and may not divide into cloves unless pre-chilled in a fridge for 4–6 weeks.
How many garlic bulbs from one bulb? +
Each bulb has 6–12 cloves and every clove becomes a full bulb — one bulb becomes ten.
Why is my garlic flowering? +
Hardneck scapes are normal — cut and cook them. Actual bolting from stress: harvest and use fresh.
Can I grow garlic in containers? +
Yes — 20+ cm deep pot, several cloves 10 cm apart, and leave it outside through winter cold.