🥬🌱 When to Plant Pak Choi in the UK

🥬 Introduction: Pak Choi Is Fast—But Sensitive to Timing

Pak choi (also known as bok choy) is a quick-growing leafy vegetable that thrives in cool conditions. While it’s easy to grow, poor timing can lead to bolting, especially in warm weather or long days. Understanding when to plant pak choi in the UK is key to producing tender leaves and crisp stems rather than prematurely flowering plants.

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📅 Best Time to Plant Pak Choi in the UK

Pak choi prefers cool, short-day conditions.

Main sowing windows:
✔ March to May
✔ July to September

Avoid sowing during the hottest part of summer unless conditions are cool and shaded.

🌱 Spring Sowing (March–May)

✔ sow from March once soil is workable
✔ start early sowings under cover
✔ harvest from April to June

Spring sowings grow quickly but can bolt if temperatures rise suddenly.

🌱 Summer Sowing – With Care (June)

✔ only sow in cool or shaded conditions
✔ choose bolt-resistant varieties
✔ keep soil consistently moist

Summer sowings carry a higher bolting risk.

🌱 Late Summer and Autumn Sowing (July–September)

✔ ideal time for pak choi
✔ cooler temperatures reduce bolting
✔ harvest from August to October

Autumn sowings usually give the best-quality crops.

🌡️ Soil Temperature and Growing Conditions

Pak choi grows best when:

✔ soil temperature is 10–18°C
✔ soil is fertile, moisture-retentive, and free-draining
✔ plants receive consistent watering

Dry or hot conditions increase bolting risk.

🌍 Regional Differences Across the UK

Cold Areas (Scotland, northern England, higher ground)

✔ start sowing from April
✔ focus on late summer sowings

Mild Areas (southern England, coastal regions)

✔ sow from March
✔ longer autumn growing season

Local temperature and day length matter more than fixed dates.

🪴 Growing Pak Choi in Containers

✔ ideal for pots, troughs, and raised beds
✔ use containers at least 15–20 cm deep
✔ space plants evenly for airflow

Container growing allows better control over soil moisture and placement.

❄️ How Pak Choi Handles Cold and Heat

✔ tolerates light frost
✔ cool weather improves flavour
✔ heat causes rapid bolting

Pak choi performs best in spring and autumn.

🚫 Common Pak Choi Growing Mistakes

❌ sowing in hot weather
❌ inconsistent watering
❌ overcrowding plants
❌ leaving plants too long before harvesting

Harvest promptly for tender leaves and stems.

🌟 FAQs

What month do you plant pak choi in the UK?

Pak choi is usually sown from March to May and July to September.

Can pak choi be grown in summer?

Yes, but it is more likely to bolt unless conditions are cool.

How long does pak choi take to grow?

Typically 4–6 weeks from sowing to harvest.

Does pak choi need full sun?

It prefers full sun in cool weather and light shade in warm conditions.

Can pak choi survive frost?

Light frosts are tolerated, especially by young plants.