🥬 Pak Choi

Sowing window (UK)	April to September
Minimum soil temperature	10°C at seed depth
Sowing depth	1 cm
Spacing	30 cm apart
Days to germination	5 days
Days to harvest	45 days
Sowing method	Direct sow outdoors
Frost hardy	No
Sun	partial-shade
Watering	high
Plant family	Brassicaceae

When should I sow Pak Choi in the UK?

In the UK, sow Pak Choi from April to September. It is normally sown direct outdoors. Wait until the soil has reached 10°C at seed depth rather than going by the calendar - pak choi will sit and rot in cold ground.

What soil temperature does Pak Choi need to germinate?

Pak Choi needs a minimum soil temperature of 10°C at seed depth to germinate reliably. Below that, germination is slow and patchy, and seed is more likely to rot than sprout. Measure at around 5cm down, in the morning, rather than trusting air temperature.

How deep and how far apart should I sow Pak Choi?

For Pak Choi, sow it 1cm deep and space plants 30cm apart.

How long does Pak Choi take to grow?

Pak Choi takes roughly 45 days from sowing to harvest. Seed usually germinates in about 5 days.

Is Pak Choi frost hardy?

No. Pak Choi is not frost hardy. Do not put it outside until the risk of frost has passed in your area, and be ready to fleece it if a late frost is forecast.

Sowing data cross-checked against RHS growing guides and UK seed-merchant catalogues. Soil temperatures are the minimum for reliable germination, measured at seed depth.