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Garlic planting is one of the most satisfying things you can do in autumn. You push a single clove into cold soil, do virtually nothing for months, and pull up a full bulb the following summer. Get the timing and spacing right and the results are reliable year after year. For the broader autumn to-do list, see our October allotment jobs guide. The RHS garlic growing guide covers varieties and soil conditions in detail.
I plant garlic most years, in October. My half plot is chalk with thin topsoil on an exposed site near the coast, and garlic copes with that better than most crops because what it wants above all is free-draining ground. The thin topsoil is the part to work on: dig in compost a few weeks before planting.
Here’s everything you need to know about growing garlic in the UK.
When to Plant Garlic in the UK
The traditional window is October to November, with October generally considered optimal. Garlic needs a period of cold (vernalisation) to trigger proper bulb development — without it, you’re likely to get rounds (single unsplit bulbs) rather than a proper multi-cloved head. Planting in autumn gives it exactly the cold period it needs, plus time to establish good roots before spring growth begins.
Some gardeners plant in February, and while this can work, autumn-planted garlic is usually bigger, healthier, and heavier. It’s also one less job to worry about in the busy spring season.
The bed wants preparing a few weeks before any of this — cleared, weeded and fed. Our guide to September on the plot covers that groundwork, along with the point in late September when the earliest southern plantings can start.
Hardneck vs Softneck: Which to Choose
This is the first decision you’ll need to make, and it’s worth understanding the difference:
Hardneck Garlic
Hardneck varieties produce a stiff central stem (the scape) in early summer that curls attractively and is delicious eaten before the bulb is harvested. They tend to have larger, more complex cloves and richer flavour — often described as nuttier and more pungent than softneck types. The trade-off is a shorter storage life (typically 4–6 months) and slightly less yield. Best for flavour and for UK climates, which suit them well.
Good hardneck varieties: Chesnok Red (reliably brilliant, great flavour), Purple Wight (large bulbs, intensely flavoured), Lautrec Wight (French origin, pink-tinged, excellent), Elephant Garlic (technically a leek relative, very mild, great for roasting).
Softneck Garlic
Softneck varieties have flexible stems that can be braided — those beautiful garlic plaits you see in kitchen shops are always softneck. They tend to store longer (up to 12 months), produce more cloves per bulb, and are what you find in most supermarkets. Flavour is milder and less complex than hardneck types.
Good softneck varieties: Solent Wight (the classic UK softneck, excellent keeping quality), Provence Wight (mild, perfect for braiding), Early Wight (one of the earliest to harvest, ready in June).
Where to Buy Seed Garlic
Always buy certified seed garlic from a reputable supplier rather than planting supermarket bulbs. Supermarket garlic may be treated to extend shelf life (inhibiting sprouting), may carry virus diseases, and is often imported from warmer climates — meaning it’s not adapted to UK growing conditions.
Good UK suppliers include Thompson & Morgan, Marshalls, Suttons, and the Isle of Wight Garlic Farm. You can also browse seed garlic on Amazon UK — useful for smaller quantities or if a specific variety is sold out elsewhere.
How to Plant Garlic Step by Step
Garlic is straightforward to plant, but a few details make a real difference to results:
- Prepare the bed. Garlic prefers fertile, well-drained soil in full sun. Dig in well-rotted compost or manure a few weeks before planting if the soil needs improving. Avoid planting where onions, leeks, or garlic grew last year — rotate every three to four years to prevent allium diseases building up.
- Break the bulb into cloves. Do this just before planting — not days in advance. Keep the papery skin on each clove; removing it increases disease risk. Discard the small central cloves (they produce the smallest bulbs) and save the largest outer cloves for planting.
- Plant pointed-end up. Push or dibble each clove into the soil about 10cm deep, with the flat basal plate (root end) down and the pointed tip just below the surface. Depth is important — too shallow and cloves get pushed out by frost, too deep and they’re slow to emerge.
- Space correctly. Plant cloves 15cm apart within rows, with rows 30cm apart. This gives good air circulation and enough room for bulbs to develop fully without competing.
- Water lightly. Unless the soil is very dry, autumn rain usually handles moisture. Don’t overwater — wet soil encourages rot.
Caring for Garlic Over Winter and Spring
Garlic is low-maintenance once planted. Green shoots will appear within a few weeks and grow slowly through winter — this is normal. Keep the bed weed-free, as weeds compete for nutrients and harbour pests. In very wet winters, covering with a cloche can help prevent rot, though established plants handle most UK winters without assistance.
In spring, growth accelerates rapidly. In June, hardneck varieties send up their scapes — curling flower stalks. Remove these by snapping or cutting them off (they’re delicious stir-fried or used in garlic scape pesto) — this redirects the plant’s energy into bulb development rather than seed production.
When and How to Harvest Garlic
Garlic is typically ready to harvest between June (early varieties) and August. The signal is the leaves: when roughly half of them have yellowed and fallen over, it’s time. Don’t wait until all the leaves have died — by then the papery skins are likely to have split, which affects storage.
Ease bulbs out of the ground with a fork rather than pulling from the leaves, which can damage the neck. Brush off loose soil but don’t wash them — you want them to dry, not stay wet. Lay them on racks or hang them in a warm, dry, well-ventilated spot for two to four weeks to cure. Once the outer skins are papery and rustling, they’re ready to store or braid.
Saving Your Own Garlic Seed
One of the great pleasures of growing garlic is that you can save your best bulbs for replanting each year. After harvesting, set aside the largest, most perfect bulbs. Store them somewhere cool and dry until October, then break them into cloves and plant the biggest outer cloves. Over several years, your garlic gradually adapts to your specific plot and soil — a process called acclimatisation — and the results tend to get better and better.
Troubleshooting Common Problems
- Cloves pushed to surface by frost: Push them back in, or mulch around plants to insulate the soil
- Yellowing leaves in spring: Normal as bulbs mature; only a concern if yellowing is early and accompanied by rot at the base
- Rounds (no clove development): Usually caused by insufficient cold — try planting earlier next year
- White rot: A serious fungal disease — remove and bin affected plants, don’t compost, and avoid planting alliums in that spot for many years
- Rust (orange spots on leaves): Reduces yields but doesn’t usually destroy the crop; improve air circulation and avoid overhead watering
For more on what to do at the allotment in October — including clearing beds, planting spring bulbs, and composting — see our October allotment jobs guide. And for the full seasonal picture, browse the Autumn Garden hub.
Common Questions
Can I plant supermarket garlic?
It’s best not to. Supermarket garlic is often imported from warmer climates, may be treated to inhibit sprouting, and can carry virus diseases. Certified UK seed garlic is adapted to our conditions and gives far more reliable bulbs.
How long does garlic take to grow?
Autumn-planted garlic is in the ground for roughly eight to ten months. Plant in October and you’ll harvest the following June to August — once about half the leaves have yellowed and flopped.
Why did my garlic grow as a single round instead of a bulb?
Almost always too little cold. Garlic needs a proper cold spell (vernalisation) to split into separate cloves, so plant in autumn rather than spring and choose varieties suited to UK winters.
Last reviewed: September 2026
🛡 Our standards: How we research · Editorial policy · Affiliate disclosure · Corrections · Last reviewed: September 2026
About Gareth
Gareth Isherwood is the editor of Danbury & Lovejoy. He has baked bread at home for 25+ years and has 15 years of growing experience across gardens, containers and other growing spaces, including an East Sussex allotment for the past three years. Read his full story →
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