When to plant Tatsoi in Cool Australia
Cool zone — applies to Hobart, Canberra, Ballarat, Orange, Armidale and similar areas. Growing elsewhere? Temperate · Subtropical · Tropical · Arid.
Sow tatsoi direct from March to May and again from September to November, scattering seed straight into a prepared bed. Germination is quick at 4–7 days and the rosettes are ready to cut in just 45–60 days, making this Asian green one of the fastest crops in a cool garden. Sow 5 mm deep and thin to 20–25 cm between plants with rows about 30 cm apart, or grow closer for baby leaves. Tatsoi is fully hardy and at its glossy, sweet best in cold weather, so it suits the cool autumn and winter of towns like Orange, Ballarat and Hobart.
Sowing calendar — cool zone
Green months are your sowing window: March to May and September to November.
Growing notes
Tatsoi is a cool-season star. Its dark, spoon-shaped leaves form flat rosettes that positively improve in flavour after frost, so the autumn window from March to May is the pick for cool districts, with a second spring run from September to November. Sow direct into moist, fertile soil in full sun to part shade; the fast 45–60 day turnaround rewards steady watering and a little nitrogen.
The main failure here is bolting. Tatsoi is a brassica and will run straight to a flower stalk if it hits warm weather, dries out, or sits crowded. A spring sowing that runs into early summer heat is the usual victim. Keep to the cooler ends of each window, water evenly, and harvest promptly rather than leaving mature rosettes standing.
Being a brassica, tatsoi also draws cabbage white caterpillars and, more commonly in cool gardens, flea beetles that pepper the leaves with tiny holes. A fine exclusion net or insect mesh laid over the bed keeps both off and is the cleanest fix for a leafy crop you eat whole. Slugs and snails can also shred seedlings in damp cool weather, so watch newly emerged rows. Harvest whole rosettes or pick outer leaves for a longer, cut-and-come-again supply.
Tatsoi at a glance
| Sowing depth | 5 mm |
|---|---|
| Plant spacing | 20-25 cm |
| Row spacing | 30 cm |
| Germination | 4-7 days |
| Days to maturity | 45-60 days |
| Frost tolerance | Hardy |
| Method | Sow Direct,Raise Seedlings |
Common questions
- when to plant tatsoi in a cool climate
- Sow tatsoi direct from March to May and again from September to November. The autumn window is ideal in cool zones, as frost sweetens the leaves. It matures fast, in just 45–60 days.
- why is my tatsoi bolting to seed
- Bolting is triggered by warmth, dry soil, or crowding, since tatsoi is a cool-season brassica. Stick to the cooler ends of each sowing window, keep watering even, and harvest promptly. A spring crop running into summer heat is the usual cause.
- what is making holes in my tatsoi leaves
- Small round holes are typically flea beetles, while ragged chewing points to cabbage white caterpillars. Both are brassica pests. Covering the bed with fine insect mesh or exclusion netting is the cleanest way to protect leaves you eat whole.
- does tatsoi survive frost in Hobart
- Yes, tatsoi is fully hardy and its flavour actually improves after frost, so it thrives in Hobart winters. An autumn sowing gives glossy, sweet rosettes through the cold months. It is one of the most reliable cool-season greens.
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