🧄 When to Plant Garlic in the UK? The Best Guide for a Successful Harvest
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🌱 Introduction: When Is the Best Time to Plant Garlic in the UK?
Garlic is one of the easiest and most rewarding crops to grow — and timing is the key to a big harvest. The UK climate is perfect for garlic, especially because most varieties need cold winter temperatures to form strong bulbs.
Planting garlic at the right time helps:
- bulbs grow larger
- cloves separate properly
- roots establish before growth begins
- plants resist rust and disease
- you achieve an earlier, healthier harvest
The good news? Garlic can be planted in autumn or spring, depending on the variety.
Below are the best garlic-planting products to give your crop the strongest start.
⭐ Check Out Our Recommended Products
• UK Hardy Garlic Bulbs (Autumn & Spring Varieties)
Ideal for getting reliable crops suited to British weather.
Click here to see them
• Garlic Fertiliser (High Potash)
Perfect for encouraging bulb formation and stronger growth.
Click here to see them
• Multi-Purpose Compost & Soil Conditioner
Helps improve drainage — essential for garlic success.
Click here to see them
🧄 When to Plant Garlic in the UK
There are two planting seasons depending on the type of garlic you choose.
🍁 1️⃣ Autumn Planting (BEST for UK Climate)
Planting time:
👉 Mid-September to late December
Autumn planting gives garlic:
- a natural cold period (vernalisation)
- stronger roots
- earlier harvests
- larger bulbs
Most recommended for UK growers, especially in cooler regions.
Ideal varieties for autumn planting:
✔ Solent Wight
✔ Germidour
✔ Provence Wight
✔ Early Purple Wight
🌸 2️⃣ Spring Planting (Still Works Well!)
Planting time:
👉 January to March
Spring garlic grows perfectly well but may produce slightly smaller bulbs because:
- it misses the cold winter snap
- it has a shorter growing season
Still a great option if you missed autumn planting.
Best spring varieties:
✔ Mikey
✔ Vallelado
✔ Picardy Wight
🧅 Hardneck vs Softneck Garlic — Which Should You Grow?
🌿 Hardneck Garlic
- Strong flavour
- Produces a flower stalk (scape)
- Larger cloves
- Slightly less long-lasting in storage
Best for colder regions.
🌼 Softneck Garlic
- Milder flavour
- More cloves per bulb
- Stores for many months
- Very reliable in the UK
Best for beginners and long-term storage.
🌱 How to Plant Garlic for the Best Results
1️⃣ Break Up the Bulbs
Separate into individual cloves.
👉 Do NOT peel the papery skin.
2️⃣ Choose a Sunny Spot
Garlic needs:
✔ full sun
✔ well-drained soil
✔ loose, fertile ground
Raised beds are ideal.
3️⃣ Improve Soil Drainage
Garlic hates waterlogging.
Add:
- compost
- grit
- leaf mould
Avoid wet or clay-heavy areas.
4️⃣ Plant Each Clove Pointy-End Up
Planting depth: 5–7 cm deep
Spacing:
- 15 cm between cloves
- 30 cm between rows
5️⃣ Water Well — Then Leave Alone
Water at planting, then only water:
- in dry spells
- during spring growth
- when bulbs start swelling
Too much water = rot.
🌬 Winter Care for Autumn-Planted Garlic
Garlic is hardy and will survive frost, ice, snow and storms.
Help it thrive by:
✔ keeping beds weed-free
✔ ensuring good drainage
✔ protecting against birds pulling cloves out
✔ adding mulch if extremely cold
Garlic LOVES cold weather.
🌱 Spring & Summer Care for Garlic
✔ Remove Flower Stalks (Hardneck Only)
Cut off scapes to help bulbs grow bigger.
✔ Feed with High-Potash Fertiliser
Promotes larger bulbs and stronger flavour.
✔ Keep Soil Moist, Not Soaked
Consistent moisture = strong, even growth.
✔ Stop Watering 2–3 Weeks Before Harvest
Helps skins dry and bulbs cure properly.
🌾 When to Harvest Garlic in the UK
Autumn-planted garlic:
👉 June–July
Spring-planted garlic:
👉 July–August
Signs garlic is ready:
- lower leaves yellow
- top leaves still green
- bulbs feel firm and rounded
Don’t leave them too long — they may split.
🌤 How to Cure & Store Garlic
After harvest:
- Brush off soil
- Lay bulbs in a sunny, airy place
- Dry for 2–3 weeks
- Store in nets or braids
Softneck varieties can last 6–9 months.
❌ Common Garlic Growing Problems
❌ Rust
Avoid overcrowding; provide airflow.
❌ Rot
Caused by wet soil — improve drainage.
❌ Small bulbs
Often due to late planting or poor sunlight.
❌ Cloves sprouting early
Cold snaps after warm periods.
🌸 FAQs
Can I plant supermarket garlic?
Not recommended — may carry disease and is not suited to UK climate.
Can I plant garlic in pots?
Yes — use deep pots with excellent drainage.
What happens if I plant garlic too late?
It will grow, but bulbs may be smaller.
Do I need to fertilise garlic?
Yes — a high-potash feed boosts bulb size.
🧄 Conclusion
Garlic is one of the simplest crops to grow in the UK, and planting at the right time — autumn for the biggest bulbs, spring for a reliable crop — gives you the best chance of success. With well-drained soil, full sun and proper spacing, you’ll enjoy a strong garlic harvest every summer.