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🌱 How to Grow Microgreens in Winter (UK Guide)
🌸 Introduction: Fresh, Fast and Foolproof Winter Growing
Microgreens are the easiest and fastest crop you can grow in winter — even when it’s freezing outside. They need very little space, grow well indoors, and aren’t affected by winter weather at all.
Growing microgreens in winter helps you:
- enjoy fresh greens in just 1–2 weeks
- grow food indoors without heat
- get high nutrition during the coldest months
- garden even when outdoor beds are frozen
- produce salads, garnishes, smoothies & sandwich fillings
Perfect for beginners, small spaces, and winter gardeners.
Below are the best products to help you grow microgreens successfully in winter.
⭐ Check Out Our Recommended Products
• Microgreen Seed Packs (Bulk or Mixed)
Specially bred for fast, vigorous indoor growth.
Click here to see them
• Shallow Trays with Lids
Ideal for sowing microgreens evenly and keeping humidity stable.
Click here to see them
• Indoor Grow Lights
Useful for dark rooms or short daylight months.
Click here to see them
❄️ How to Grow Microgreens in Winter (Full Guide)
Microgreens grow quickly even with low winter light and indoor temperatures.
🌱 1. Choose Fast-Growing Microgreen Varieties
The best winter options:
- radish
- broccoli
- mustard
- rocket
- pea shoots
- sunflower
- beetroot (colourful but slightly slower)
All grow well on a windowsill.
🪴 2. Use the Right Containers
Microgreens grow best in:
- shallow trays
- seed trays
- recycled fruit punnets with holes
- microgreen propagation trays
They need good drainage.
🌿 3. Fill Trays with Fine Compost
Use:
- peat-free multipurpose
- seed compost
- coconut coir
Avoid heavy or lumpy compost.
Fill to around 2–3 cm deep.
🌱 4. Sow Seeds Thickly
Microgreens are grown densely.
- sprinkle seeds evenly across the surface
- do not bury them deeply
- mist lightly with water
Some larger seeds (peas, sunflower) can be lightly pressed into soil.
💦 5. Water from the Base (Best Method)
Add water to the tray beneath to avoid:
- mould
- overwatering
- seed disturbance
Top misting is fine at the start, but switch to bottom watering after germination.
🌡 6. Keep Them Warm for Germination
Ideal germination temperature:
15–20°C (normal indoor room temperature)
Cover trays with lids or cling film to maintain humidity.
Remove covers once seeds sprout.
💡 7. Give Them 4–6 Hours of Light Daily
Microgreens tolerate low light well, but:
- a bright windowsill is enough
- grow lights boost colour & speed
- rotate trays to avoid “leaning”
✂️ 8. Harvest in 7–14 Days
Use scissors to cut just above the compost.
Microgreens are ready when:
- first true leaves appear
- stems are 3–6 cm tall
- colour is strong
Most are harvested once and then composted.
🌬 Optional: Regrow Pea Shoots
Pea microgreens regrow 1–2 times after cutting.
Other varieties are usually single-harvest crops.
🌧 Winter Microgreen Troubleshooting
❌ Mould or fungus
Reduce watering, improve airflow, and space trays apart.
❌ Yellow seedlings
Normal before they receive light — they green up quickly.
❌ Leggy growth
Move to a brighter window or add a grow light.
❌ Slow growth
Common in January — temperatures may be low.
❌ Uneven germination
Sow seeds more densely and mist evenly.
🌱 What to Expect in Early Spring
By March:
- microgreens grow faster as daylight increases
- heating costs stay at zero
- you can mix indoor microgreens with early tunnel/greenhouse salads
- sowings become more reliable & stronger
A great bridge between winter growing and spring planting.
🌸 FAQs
Do I need specialist equipment?
No — trays, compost and seeds are enough.
Can microgreens grow without sunlight?
They need some light — grow lights help in dark rooms.
Are microgreens nutritious?
Yes — often more nutrient-dense than mature plants.
How often should I sow them?
Every 1–2 weeks for a constant supply.
🌼 Conclusion
Microgreens are the easiest and fastest winter crop you can grow indoors. With minimal space, no heating, and very little light, you can enjoy nutritious, fresh greens in under two weeks — all winter long. Perfect for beginners, kids, and anyone wanting home-grown food during the darkest months.