How to grow Tatsoi

Brassica narinosa

Tatsoi are heavy feeders, so beds should be prepared with lots of compost and some organic 2:3:2. Feed every 4 weeks with a balanced fertiliser that is high in nitrogen.

Growing Tatsoi from seed

Sow Tatsoi directly outdoors into finely raked, moist, weed free soil. Sow successionally every 2-3 weeks in spring – early as the soil can be worked. Also can be sown in late summer for an autumn / early winter harvest.

Space the initial planting very densely, then harvest entire plants, leaving the strongest to grow to maturity at about 25cm (12in) spacing.

Sow seeds thinly at a depth of 1cm (¼ to ½ inch). For mature plants, sow 15cm (6in) apart with 45cm (18in) between the rows. For use as stir fry sow in 15-30cm blocks. Sow Tatsoi very close together for baby leaf/microgreens.

Sow in late summer and autumn.

Try to aim for a seed spacing of at least 7.02 inches (18.0 cm) and sow at a depth of around 0.39 inches (1.0 cm). Soil temperature should be kept higher than 15°C / 59°F to ensure good germination.

Transplanting Tatsoi

Thin Tatsoi seedlings once at 10cm (4in) tall.

For mature plants, sow 15cm (6in) apart with 45cm (18in) between the rows. For use as stir fry sow in 15-30cm blocks. Sow very close together for baby leaf.

As Tatsoi is very hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.

Harvesting Tatsoi

The whole plant may be harvested at once or the leaves can be picked continuously for several weeks.

Seed Saving Tatsoi

Wait until the seed pods are dry and brown, then cut them and place the stems in a paper bag. Shake to collect the seeds.

How long does Tatsoi take to grow?

These estimates for how long Tatsoi takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.

Days to Germination How long does it take Tatsoi to germinate?
7 days

Average 7 days | Min 2 days | Max 16 days (25)

Days to Transplant How long until I can plant out Tatsoi?
+ 19 days

Average 19 days | Min 13 days | Max 37 days (5)

Days to Maturity How long until Tatsoi is ready for harvest / bloom?
+ 46 days

Average 46 days | Min 32 days | Max 109 days (5)

Total Growing Days How long does it take to grow Tatsoi?
= 72 days

Other names for Tatsoi

Spinach mustard, Spoon mustard, Rosette bok choy, broadbeak mustard

Brassica rapa var. rosularis, Brassica rapa rosularis

Footnotes


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