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How to grow Chillies in the UK

Need a long, warm season. Best on a sunny windowsill or in a greenhouse.

Chillies
Photo: Vyacheslav Argenberg ยท CC BY 4.0

When to sow, plant and harvest chillies

Sow indoorsmid January to late March
Plant outearly June to late June
Pickmid July to mid October

Dates are for central England. Sow about two weeks later in the north and Scotland, and up to two weeks earlier in the south and south west. Get the dates for your postcode.

Starting it indoors

  1. Fill a small pot or tray with seed compost
  2. Push the seeds in (0.5cm deep) - a couple per pot
  3. Water gently, then put them on a bright windowsill
  4. Keep the compost damp but not soggy - check it every day
  5. When they have 2 proper leaves, give each seedling its own pot

Planting it out

  1. Toughen them up ('hardening off'): put them outside in the day for a week, bring them in at night
  2. Dig a hole a bit bigger than the pot
  3. Tip the plant out gently, holding the leaves, not the stem
  4. Pop it in the hole, firm the soil around it, and water well
  5. Space the plants about 40cm apart each way

Top tips for growing chillies

Looking after chillies

Soil and feeding

Rich compost, kept moist, in the warmest spot you have. Plant into good compost, then feed with tomato feed once a week as soon as the first flowers appear.

Pests and problems

Harvesting and eating chillies

Cut them off with scissors. Green ones are milder, red ones are hotter.

How to eat them: Tiny bit in a stir-fry. A grown-up should chop them.

Storing chillies

Keeps 1-2 weeks.

Freeze whole in a bag - chop straight from frozen. Or thread onto string and hang up to dry.

Good varieties of chillies

Companion planting

Grows well with

Saving your own chillies seed

From a fully ripe fruit, in late summer or autumn.

  1. Let one fruit ripen right through to its final colour
  2. Cut it open and scrape the seeds onto a plate
  3. Dry them for 2 weeks somewhere warm (chillies: wash your hands after - and don't touch your eyes!)
  4. Seeds from 'F1' varieties (it says on the packet) don't grow the same - save from ordinary ones.

Things to build for chillies

Where to buy chillies seeds

Thompson & Morgan · Suttons · Amazon

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Chillies questions

When should I sow chillies in the UK?

In the UK, sow chillies indoors from mid January to late March. These dates suit central England; sow about two weeks later in the north and Scotland and up to two weeks earlier in the mild south and south west.

When do I plant out chillies?

Plant chillies out from early June to late June, once the last frost has passed.

When can I pick chillies?

Chillies is ready from mid July to mid October. Cut them off with scissors. Green ones are milder, red ones are hotter.

How long do chillies take to grow?

Roughly 20 weeks from sowing or planting until the first harvest.

Are chillies easy to grow?

Chillies are rated 'more care needed' for beginners, and can be grown in pots and containers.

Plan your own garden: it tells you what to do and when, for your postcode.

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