When to Plant Rutabaga (Swede) in Cairns, Tropical Guide

Sow February to May. Right now in September it is out of season. The next sowing month is February.

Also called swede.

Published · Last reviewed · By Garden Buddy
Growing advice is reviewed by hand. Planting dates, current conditions and prices on this page update daily.

This Rutabaga (Swede) guide is written for the Tropical zone, which takes in Cairns, Townsville and Darwin. Somewhere else? Your postcode picks the right one.

Not your zone? Brisbane Sydney Melbourne Canberra Alice Springs Perth

Also handy: will it frost this week? and what grows in shade.

Rutabaga (Swede)

Photo: Wikimedia Commons

Swedes (known as rutabagas in North America) are a large, slow-growing root crop with yellow-orange flesh and a sweet, earthy flavour that improves after frost. They are a cross between cabbage and turnip, requiring cool conditions for best results. An underrated winter staple in Australian cool-temperate gardens.

Planting Calendar for Tropical

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- S S/T/D T/D T - - - - - - -

S = Seed Tray   T = Transplant   D = Direct Sow

Want a nudge when it is Rutabaga (Swede) sowing time in Cairns?

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Current Growing Conditions

Soil temperature: 21.4°C (optimal range: 7–25°C) ✓ Ready to plant

Modelled from Open-Meteo forecast (Cairns), not a live sensor.

How to Grow Rutabaga (Swede) in Tropical Australia

When to Plant

Swedes require cool conditions (optimum 15-18C) for 14-18 weeks. Tropical heat makes this crop impractical. Consider turnips as a faster alternative.

Soil
Deep, fertile, well-drained loam enriched with well-rotted compost. Avoid acid soils prone to clubroot. Remove stones which cause misshapen roots.
pH Range
6.0-7.5
Sunlight
Full sun
Spacing
20cm apart, 40cm between rows
Watering
Consistent deep watering throughout growth. Irregular watering causes woody, fibrous roots and can lead to splitting. Water deeply once or twice weekly.

Companion plants: Onion, Garlic, Pea, Nasturtium (trap crop)

Avoid planting near: Strawberry, Other brassicas (clubroot risk)

Tropical Growing Tips for Rutabaga (Swede)

Recommended Varieties

  • Not reliably grown in tropical zones

Key Challenges

  • Temperatures too high for root development
  • Bolting in heat
  • Excessive pest pressure on brassicas

Pro Tips

  • Do not attempt swedes in the tropics, conditions are wrong
  • Grow turnips instead (faster, more heat-tolerant)
  • If determined to try, plant in the driest, coolest months (June-July) and accept poor results

Harvesting Rutabaga (Swede)

When ready: Roots are 8-12cm diameter, with purple/green shoulders visible above soil. Harvest after first frost for sweetest flavour. Roots become woody if left too long (larger than 15cm).

How to harvest: Loosen soil alongside root with a fork. Lift gently. Trim foliage to 2cm. Brush off soil. Do not wash until ready to use.

Worth growing?

A 2.4 m × 1.2 m bed fits 12 plants, about $45 worth at today’s Coles prices, checked today.

That is roughly 6 kg at $7.50 a kilo.

Draw your rutabaga (swede) bed → No account needed.

Where to next

What rutabaga costs in the shops right now, retailer by retailer, updated daily.

Also worth sowing in the tropical zone this September: Lemongrass, Ginger, Cucumber and Basil.

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Common Questions About Rutabaga (Swede)

When do you plant rutabaga in Australia?

It depends on your climate zone, not the calendar month alone. Planting months by zone:

Does rutabaga grow all year round in Cairns?

No. In the Tropical zone the planting months are Feb to May. Outside that window it either bolts, sulks or gets cut down by the weather.

What else is rutabaga called?

Rutabaga is the usual Australian name. Overseas seed packets and recipes call it swede. Same plant, same growing advice.

Which zone am I in?

Type your postcode into the box under the heading and the page tells you, and links this crop in your own zone if it differs. Or look it up on the grow zone map. This page is the Tropical zone, Cairns is its reference city.