Growing Pak Choi at the Allotment

Growing Pak Choi at the Allotment

Pak Choi is a brassica that comes in different coloured varieties such as green, white and purple. It grows quite quickly and the leaves can be eaten raw or cooked.

Pak Choi, also known as Bok Choy or Chinese Cabbage, is a popular ingredient of Asian cuisine and can be eaten in salads or as stir-fries. Although native to China, Pak Choi is fairly easy to grow in the UK. This is a low-maintenance crop and it is not just flavourful but also highly nutritious, as it’s a rich source of vitamins, fibre, calcium and antioxidants. While easily available in the UK supermarkets, nothing beats the flavour of freshly harvested produce. 

If you want to learn how to grow Pak Choi in your kitchen garden, this guide is for you. We provide useful advice for both new and experienced growers, helping you find answers to common questions, such as when to plant and when to pick Pak Choi.

How to Grow Pak Choi

Pak Choi is easy to grow, with repeated harvests due to its cut-and-come-again nature. The young leaves are ready to harvest within 4 weeks of sowing and for the more mature leaves, you might need to wait 8-10 weeks. When selecting the seeds or plug plants, look for varieties that are bolt-resistant and have good heat tolerance. If you want to grow Pak Choi in a container, choosing a compact variety is best.

The popular variants of Pak Choi to grow in the UK include:

  • ‘Summer Breeze’
  • ‘Choko F1’
  • ‘Glacier’
  • ‘Ivory’
  • ‘Red Choi’
  • ‘Joi Choi F1’
  • ‘Macau’
  • ‘Canton White’
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When to Plant Pak Choi

You can sow Pak Choi from April to July, depending on the variety. It can be easily sown indoors or outdoors and grown directly in the soil or in large containers. However, you must ensure the ground is warm and there is no risk of a late frost. 

As a cool-season crop, we recommend growing Pak Choi in late Spring or early Summer, or in late Autumn/early winter. Very harsh weather can impact its growth. Those with access to a greenhouse can sow Pak Choi in late summer as well and, under protection, it can grow well into winter.

Tips for Growing Pak Choi

  • After sowing, young baby leaves will be ready for picking in approximately one month. If you are waiting for the bigger and more mature leaves, it will take approximately 2 months. 
  • Sow the seeds approximately 1cm deep and always harden them off before planting outdoors. Pak Choi, also known as Chinese Cabbage, likes full sun in damp soil and will thrive with plenty of organic matter added into the soil. Leave 10-30 cm between plants, depending on how big you want them to grow. 
  • Water them regularly, so they don't dry out completely.
  • If you are growing Pak Choi in early Spring or late Autumn, choose a location that gets full sun; however, for those grown in summer, a spot with partial shade is preferred to prevent bolting. If you notice flower stems appearing, harvest the plant immediately. An ideal temperature for germination is around 18 – 24°C.
  • For container-grown Pak Choi, using peat-free, multi-purpose compost is preferred.
  • You must protect the young plants from slugs and snails. Regularly, weeding is also required. Aphids, cabbage whitefly and cabbage worms are other common pests that love devouring Pak Choi. These plants are also susceptible to diseases such as club root and downy mildew.

How To Harvest Pak Choi

You will be able to harvest leaves between April and October, depending on the variety and sowing time. Once autumn arrives and the growth slows, cut the plant down to a stump and you might have more leaves re-grow.

The baby salad leaves are a cut-and-come-again variety and you can only pick a few leaves each time you need them and you’ll continue to get a fresh supply. To harvest mature Pak Choi (when the plant is about 12-18 inches tall), cut the stem directly at the base.

It is best eaten fresh and lightly cooking the leaves helps preserve the crunch and flavour.

Growing Pak Choi in Summary

Sowing Pak Choi

  • Sow from April - July
  • Sow in full sun or with little shade
  • Sow in damp soil with organic matter

Growing Pak Choi

  • Water regularly
  • Watch for slugs and pests
  • Keep weed-free

Harvesting Pak Choi

  • Pick young leaves after approximately one month
  • Pick more mature leaves 
  • Cut plant at the stump at the end of the season

Learn More on Allotment Online

Want to grow Pak Choi in your allotment? Allotment Online offers invaluable tips and a growing community to guide you through your journey. If you are new to growing Pak Choi in the UK and need helpful advice, we are here for you.

Join today to share stories, advice and tips with other fellow allotment-growers. Sign up and become a member today.

Are you looking for tips on growing cabbage, broccoli or celeriac? Head to our Grow Your Own page to find more plant-specific growing advice.