Garlic

Allium sativum

Garlic is a bulbous allium native to Central Asia, prized worldwide as a culinary cornerstone for its intense, complex flavour. Each bulb is composed of individual cloves enclosed in papery wrappers, ranging from mild softneck artichoke types to pungent hardneck rocamboles. It thrives in cool growing conditions, requires a cold dormancy period to form proper bulbs, and rewards minimal inputs with generous, long-storing harvests.

Growing

Plant individual cloves pointed-end up, 5 cm deep and 15 cm apart in rows 30 cm apart, once soil temperatures are stable below 10 °C but remain above 2 °C so roots can establish before hard frost. Choose a sunny, well-drained bed enriched with compost. Separate cloves from heads no more than a day before planting. Hardneck varieties need a prolonged cold period (vernalisation) to initiate bulb formation; softneck types are more tolerant but still perform best with cool conditions. Mulch with straw or leaves after planting to protect against soil heave and retain moisture. Shoots emerge when soil warms again in late dormancy — this is normal.

Care

Remove the mulch partially once shoots push through to allow light in. Water regularly during active growth, targeting roughly 25 mm per week, but reduce watering once leaves begin to yellow and die back. Feed with a balanced fertiliser or diluted fish emulsion when shoots are 15 cm tall. For hardneck varieties, remove the curling flower scape (garlic scape) as it appears to redirect energy into bulb development. Stop all irrigation once the lower third of leaves have yellowed to allow outer skins to cure on the bulb.

Harvest

Harvest when roughly half the leaves have turned yellow and collapsed but at least four or five green leaves remain — each live leaf corresponds to a wrapper layer on the bulb. Loosen soil with a fork rather than pulling, to avoid snapping necks. Brush off loose soil but do not wash. Cure bulbs by hanging in bundles or spreading on racks in a warm, well-ventilated, shaded spot until the necks are completely dry and skins are papery — typically two to four weeks.

In the kitchen

Crush, slice, or mince cloves and use raw in dressings, aioli, and compound butters for maximum pungency, or roast whole heads until caramelised and spreadable. Sauté gently in oil as a base for sauces, soups, and stews; avoid high heat that turns it bitter. Green garlic shoots and scapes are mild and excellent grilled or chopped into stir-fries. Softneck types are milder; rocamboles deliver deeper, more complex heat.

Storing

After curing, store bulbs in a cool (10–15 °C), dry, well-ventilated location away from light. Softneck silverskin types such as Nootka Rose store 9–12 months; rocambole types such as Spanish Roja store 4–6 months. Do not refrigerate whole bulbs — moisture triggers sprouting. Individual peeled cloves keep in the fridge for up to one week, or submerged in olive oil in the freezer for three months. Roasted garlic purée freezes well in ice-cube trays for up to six months.

Buy seeds

US seed suppliers

Swedish seed shops

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