Sweet Peppers in Manchester

Capsicum annuum

Sweet Pepper
Sweet Pepper · Capsicum annuum

Sweet peppers are tender annuals that produce crisp, colourful fruits with a mild flavour. Native to Central and South America, they thrive in warm, sunny positions and are commonly grown under glass in the UK to ensure reliable cropping, though they can succeed outdoors in sheltered spots during particularly warm summers.

75 cm · Full Shade · Moderate Water

Add to garden

Calibrated to Manchester · last frost ≈ 17 Apr

Sow indoors January to February, plant out May, harvest July to September. Frost risk November to April.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Sow indoorsYesYesNoNoNoNoNoNoNoNoNoNo
Plant outNoNoNoNoYesNoNoNoNoNoNoNo
HarvestNoNoNoNoNoNoYesYesYesNoNoNo

Growing guide

Step-by-step instructions for growing Sweet Pepper

Growing guide for

Change the guide to see different planting timelines and tips.

Step by step guide to growing sweet peppers outdoors in a warm, sheltered spot.

  1. 01

    Sow Seeds Indoors

    17 Jan to 6 Feb

    Fill seed trays with peat-free seed compost and sow your seeds about deep. Cover lightly with compost and water gently from below. Place on a warm windowsill or in a propagator at .

  2. 02

    Prick Out Seedlings

    29 Jan to 11 Feb

    When the first true leaves appear, transplant seedlings into pots with peat-free compost. Keep in a bright, warm spot and water to keep moist.

  3. 03

    Pot On

    19 Feb to 6 Mar

    As plants grow and roots fill the pots, move them to larger containers to develop strongly before planting out.

  4. 04

    Harden Off

    4 May to 17 May

    May in Manchester is usually time to start hardening off your plants. Place them outside during the day and bring in at night, gradually increasing exposure over two weeks to acclimatise to outdoor conditions.

  5. 05

    Transplant Outdoors

    14 May to 28 May

    After all risk of frost has passed, plant in a sunny, sheltered spot with well-drained soil. Space apart and stake if needed. Protect from slugs with barriers.

  6. 06

    Pinch Out Growing Tips

    31 May to 14 Jun

    Pinch out the tips when plants are high to promote bushiness and more fruits.

  7. 07

    Fertilise

    31 May to 29 Aug

    Once flowers form, feed every week with high-potash fertiliser. Water consistently and mist flowers in dry weather to aid fruit set.

  8. 08

    Harvest

    10 Jul to 3 Sept

    Harvest when fruits are full-sized, picking green or allowing to colour for sweetness. Keep picking to extend the crop.

Companion plants

Tap a plant to see why it works (or doesn't) with Sweet Pepper.

Good companions

Plants to avoid

Why companion planting matters

Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.

Suggested varieties

Popular varieties of Sweet Pepper to consider

California Wonder

A classic blocky bell pepper with thick, crisp flesh and a sweet flavour. It's a reliable cropper in UK greenhouses and also does well in a sunny, sheltered spot outdoors.

Gypsy

An early-maturing sweet pepper with elongated, pointed fruits that ripen from pale green to red. It's productive in cooler summers and is well-suited to growing in pots on a patio or in a greenhouse.

King of the North

A heritage variety bred for short, cool seasons, producing blocky fruits that ripen to a deep red. It copes with variable UK weather better than many bell peppers, making it a good choice for outdoor growing.

Marconi

An Italian-style sweet pepper with long, tapering fruits that are sweet and juicy. It's vigorous and heavy-cropping, and the thin walls cook down quickly, though it's also good eaten fresh in salads.

Ariane

A modern orange bell pepper that ripens early and consistently, even in cooler conditions. The fruits are sweet and crunchy, and the plants stay compact, so they suit smaller greenhouses or large containers.

Sweet Pepper guides by town

See how Sweet Pepper timing shifts in other towns with different frost dates.