🌱 Seeds You Can Start Indoors in February

February is the perfect month to begin indoor seed sowing in the UK. While outdoor conditions are still cold and unreliable, starting seeds indoors gives plants a strong head start and leads to earlier, healthier harvests.

⭐ Recommended Products — February Gardening Essentials

• Early Spring Seed Collection (February Sowing)
A pack of seeds suited for February sowing — think early onions, brassicas, tomatoes, chillies, and early flowers like pansies and primroses. Great for getting a head start on the growing season.
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• Seed & Cutting Propagation Compost
Fine, well-draining compost formulated for seeds and cuttings. Essential for giving young roots the ideal environment to establish strongly without rotting.
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• Seed Trays & Propagator Kit
Includes reusable seed trays, modules, and clear lids to create a controlled germination environment. Helps maintain humidity and protects young seedlings.
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• Heat Mat & Grow Lights for Seed Starting
Provides bottom heat and supplemental light — especially helpful in February’s low light and cooler temperatures to improve germination and early growth.
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• Plant Labels & Waterproof Marker Set
Keep track of your sowings with durable labels and a weather-proof pen — very useful when starting lots of different seeds in February.
👉 Click here to see top options

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🧅 Onions (From Seed)

Onions benefit hugely from an early indoor start.

How to sow:

• Sow in modules or seed trays
• Keep at 10–15°C
• Provide good light

Why start now:
Long growing season — early sowing produces larger bulbs.

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🥬 Leeks

Leeks need time to bulk up.

How to sow:

• Sow thinly in trays or modules
• Keep cool but frost-free

Why start now:
Early sowing leads to thicker, stronger stems.

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🥦 Brassicas (Early Varieties)

Includes:

• Cabbage
• Cauliflower
• Calabrese
• Brussels sprouts

How to sow:

• Sow in modules under cover
• Keep bright and cool

Why start now:
Creates sturdy transplants ready for planting out in spring.

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🌿 Celery

One of the slowest vegetables to germinate.

How to sow:

• Sow on the surface — do not cover
• Keep warm and moist

Why start now:
Celery needs a long growing season and steady growth.

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🍅 Tomatoes (Optional With Heat)

Only start tomatoes now if you have warmth and light.

How to sow:

• Use a heated propagator (18–22°C)
• Provide maximum light

Why start now:
Gives a very early crop, but plants must not outgrow conditions.

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🌶️ Chillies and Peppers

Ideal for early indoor sowing.

How to sow:

• Sow in modules or trays
• Maintain 20–25°C
• Use a propagator if possible

Why start now:
Slow germination and long growing season.

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🥬 Lettuce (Indoor Varieties)

Great for early salads.

How to sow:

• Sow little and often in trays or modules
• Keep cool and well-lit

Why start now:
Produces early harvests under cover.

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🌱 Spinach (Indoor Start)

Can be started indoors for early planting.

How to sow:

• Sow in modules
• Keep compost just moist

Why start now:
Strong young plants cope better when planted out.

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🌿 Herbs to Start Indoors

February is ideal for some herbs.

Best choices:

• Basil (with warmth)
• Parsley
• Chives
• Coriander

Why start now:
Provides fresh growth earlier in the season.

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❄️ February Indoor Sowing Tips

• Use fresh, fine seed compost
• Avoid overwatering cold compost
• Provide as much light as possible
• Turn trays regularly to prevent leaning
• Label everything clearly

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⚠️ Seeds Better Left Until Later

Avoid starting these indoors in February:

• Courgettes
• Squash
• Beans (except broad beans)
• Sweetcorn

They grow too quickly and become difficult to manage.

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