Garlic grows from a single clove into a full bulb with 8–12 cloves in one season, making it one of the easiest crops for home growers. Plant cloves in early fall, choose between hardneck varieties with curled scapes or softneck types that braid well, and harvest in early summer when leaves yellow. Proper soil preparation and storage keep garlic fresh for months.
Garlic is one of the most rewarding crops to grow at home — a single clove becomes a full bulb with 8–12 cloves in just one season. It thrives in cool climates, needs minimal fussing, and stores brilliantly for months. Whether you're growing hardneck varieties with their distinctive curled scapes or softneck types that braid beautifully, garlic rewards patience and simple care.
Choosing the Right Variety
Garlic splits into two main types: hardneck and softneck. Hardneck varieties like Rocambole Garlic, Purple Stripe Garlic, and German Red produce a flowering stem (scape) and store for 4–6 months. Softneck types including Silverskin Garlic and Creole Garlic lack scapes, store longer (up to 8 months), and suit mild climates. Specialty varieties like Chesnok Red, Porcelain Garlic, and Bogatyr offer distinct flavours and heat tolerance. Mild French suits beginners. Chinese Purple and Artichoke Garlic add ornamental appeal. Choose based on your climate and storage space.
When to Sow and Plant Out
Garlic is planted in autumn as individual cloves, not seeds. Press cloves 5 cm (2 inches) deep, pointy end up, into prepared soil when temperatures drop to 10–15°C (50–59°F). Space cloves 15 cm (6 inches) apart in rows 30 cm (12 inches) apart. Cloves need a cold period (vernalisation) over winter to form proper bulbs. In mild climates, plant slightly later to avoid premature sprouting. Succession planting isn't necessary — sow all at once. Mulch after planting to protect emerging shoots from hard frosts.
Soil, Site and Containers
Garlic demands well-draining, loose soil rich in organic matter. Aim for pH 6.0–7.0. Work in 5–7 cm (2–3 inches) of compost or aged manure before planting. Choose a sunny spot with at least 6–8 hours of direct light daily. Avoid waterlogged ground — raised beds work well in heavy clay. Container-growing suits small spaces: use 20 cm (8 inch) pots, one clove per pot, or 30 cm (12 inch) pots for three cloves. Ensure drainage holes. Containers dry faster, so monitor moisture closely.
Feeding, Watering and Care
Water regularly during spring growth but reduce once bulbs begin swelling in late spring. Aim for 2.5 cm (1 inch) per week. Apply a balanced fertiliser (10-10-10 NPK) in early spring as shoots emerge, then switch to a potassium-rich feed (5-10-10) in mid-spring to support bulb development. Side-dress with compost monthly. Remove flower scapes from hardneck varieties in late spring — this redirects energy to bulb enlargement. Keep beds weed-free; mulch between rows to suppress competitors and retain moisture.
Common Problems and Solutions
White Rot is the most serious fungal threat — no cure exists, so rotate crops and solarise infected soil. Fusarium Basal Rot causes soft, rotting bulbs; improve drainage and avoid overwatering. Garlic Rust appears as orange pustules on leaves; remove affected foliage and ensure air circulation. Onion Fly larvae tunnel into cloves; cover young plants with fleece. Nematodes stunt growth; use resistant varieties or long crop rotations. Downy Mildew causes grey mould in wet springs; thin plants and reduce overhead watering.
Harvesting and Storage
Harvest when leaves yellow and brown from the base upward — typically 240–270 days after planting. Gently lift bulbs with a fork, avoiding bruising. Cure in a warm, airy, shaded spot (18–24°C / 64–75°F) for 2–3 weeks until outer skins papery and roots brittle. Trim roots and dead foliage, leaving 2.5 cm (1 inch) of stem. Store in mesh bags or braids in a cool, dry place (10–15°C / 50–59°F). Properly cured garlic keeps 6–8 months. Reserve largest bulbs for replanting next season.
Companion Planting and What to Avoid
Garlic thrives alongside Strawberries (pest deterrence), Brassicas like Cabbage (mutual pest protection), and Roses (fungal disease reduction). Carrots and Onions are neutral companions. Avoid planting near Beans and Peas — they compete for nitrogen and garlic's sulphur compounds inhibit their growth. Keep Fennel at distance; it allelopathically suppresses most neighbours. Space garlic away from other Alliums (Onions, Leeks) to reduce shared pest and disease pressure. Rotate garlic beds yearly to prevent soil depletion and pathogen build-up.
Frequently asked questions
Can I grow garlic from a store-bought bulb?
Yes, but quality is uncertain — commercial garlic is often treated with sprout inhibitors. Seed garlic from specialist suppliers is certified disease-free and vigorous. If using store bulbs, choose organic, untreated stock and inspect for firmness and mould.
How many cloves does one bulb produce?
A mature garlic bulb typically yields 8–12 cloves, depending on variety and growing conditions. Hardneck types average 8–10 cloves; softneck varieties often produce 12–16 smaller cloves per bulb.
Do I need to remove garlic scapes?
Removing scapes from hardneck varieties redirects 10–15% more energy into bulb swelling, increasing yield. Scapes are edible and delicious — harvest when tender and curl. Softneck varieties produce no scapes.
Why is my garlic rotting in storage?
Inadequate curing, high humidity, or physical damage causes rot. Cure for 3 weeks minimum in warm, dry, airy conditions. Store at 10–15°C with 60–70% humidity. Discard any soft or mouldy bulbs immediately.
What's the best way to store garlic long-term?
Braid softneck varieties or store in mesh bags in a cool (10–15°C), dry pantry or cellar. Avoid plastic bags — they trap moisture. Check monthly and remove any sprouting or decaying bulbs. Properly cured garlic lasts 6–8 months.