Pak Chois in Pentre Elan

Brassica rapa subsp. chinensis

Pak Choi
Pak Choi · Brassica rapa subsp. chinensis

A quick-growing Asian brassica for the UK garden. It does best in cool, moist conditions, with regular sowings from late spring through summer and a steady supply of water to slow bolting.

30 cm · Full Sun · High Water

Calibrated to Pentre Elan · last frost ≈ 23 May

Sow May to September, harvest August to September. Frost risk September to May.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
SowNoNoNoNoYesYesYesYesYesNoNoNo
HarvestNoNoNoNoNoNoNoYesYesNoNoNo

Growing guide

Step-by-step instructions for growing Pak Choi

  1. 01

    Sow Small Batches

    23 May to 20 Sept every 3 weeks

    Sow thinly around 23rd May - 20th September in shallow drills, then repeat every 21 days for a steady supply. Cover lightly with fine soil and keep the row moist while the seed germinates.

  2. 02

    Thin Seedlings

    1 Aug to 12 Aug

    When seedlings have a couple of true leaves, thin them to one plant every . Use the thinnings in the kitchen if they are healthy, and keep the strongest plants growing on.

  3. 03

    Protect From Pests

    29 Jul to 16 Sept

    Check plants from 29th July for slug and snail damage, especially on soft young leaves. Use barriers, hand-picking, or pellets where needed, and keep the area tidy so pests have fewer hiding places.

  4. 04

    Water Regularly

    29 Jul to 29 Sept

    From 29th July, keep the soil evenly moist so plants grow away quickly and are less likely to bolt in warm spells. Water at the base rather than over the leaves, and give a good soak whenever the top of the soil starts to dry.

  5. 05

    Harvest Leaves or Whole Plants

    21 Aug to 29 Sept

    Start picking from 21st August once plants are firm enough to crop. Take outer leaves for cut-and-come-again harvests, or cut whole plants at soil level when they reach eating size.

Companion plants

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

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 Pak Choi to consider

Joi Choi

A reliable green pak choi with good bolting tolerance and crisp stems.

Mei Qing Choi

A compact mini pak choi that suits smaller gardens and containers.

Green Stem

A standard green-stemmed type with quick growth and a mild flavour.

Suiho

A productive hybrid pak choi grown for uniform heads and steady cropping.

Pak Choi guides by town

See how Pak Choi timing shifts in other towns with different frost dates.