When to plant Caraway in Subtropical Australia

Subtropical zone — applies to Brisbane, Gold Coast, Sunshine Coast, Coffs Harbour, Lismore and similar areas. Growing elsewhere? Temperate · Cool · Tropical · Arid.

Sow caraway direct from February through November, scattering the main autumn and winter runs across the cooler half of the year when subtropical humidity eases. Seed germinates in 10-20 days, so sow it 10 mm deep straight where it will grow, since caraway resents being transplanted. Thin seedlings to 25 cm apart in rows 25-30 cm apart. Be patient: caraway is biennial and takes around 365 days to mature, forming a leafy rosette in the first season and setting its aromatic seed heads the following one. An autumn sowing in Coffs Harbour or Lismore gives it the long, mild run it needs.

Sowing calendar — subtropical zone

Green months are your sowing window: February to November.

Growing notes

Caraway is a temperate biennial being coaxed through a subtropical calendar, so timing is everything. The classic failure here is bolting or rotting through a humid summer. Sown into the wet season heat, seedlings sulk, damp off, or run to weak flower without ever building a proper rosette. Stick to autumn and winter sowings, when nights are cooler and the air is drier, and caraway settles far more happily.

Good drainage is non-negotiable. In heavy subtropical clay after summer rain, the taproot rots. Raise the bed, work in coarse grit, and avoid overhead watering that leaves the crown wet overnight.

Because it is direct-sown and slow, keep the bed weed-free while seedlings establish; caraway is easily smothered early. In its first season you are growing a low, ferny rosette that resembles a carrot top, useful as a leaf herb. The flavourful seed only comes in year two, after the plant flowers, so leave a few plants in place through the following spring. Let heads dry on the plant, then cut and finish drying under cover before threshing.

Caraway at a glance

Common questions

Can you grow caraway in the subtropics?

Yes, but treat it as a cool-season crop and sow from autumn into winter rather than through the humid summer. The main challenge is getting it past a wet subtropical summer, so good drainage and a February to winter sowing give the best results.

Why is caraway taking so long to produce seed?

Caraway is biennial, so it takes around 365 days and two seasons to mature. It grows a leafy rosette in year one and only flowers and sets seed in year two, so leave plants undisturbed through their second spring.

Should I transplant caraway seedlings?

No, sow caraway direct where it will grow. It forms a taproot and resents disturbance, so transplanting usually checks growth or triggers early bolting. Thin seedlings to 25 cm instead of moving them.

How deep do you sow caraway seed?

Sow caraway seed about 10 mm deep into well-drained soil. Firm the soil gently and keep it evenly moist until germination, which takes 10-20 days in the mild autumn conditions it prefers.

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