When to Plant Jerusalem Artichoke in Canberra, Cold / Highland Guide

Plant August to September. Right now in October it is out of season. The next planting month is August.

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Also called sunchoke, sunroot.

Planting window
Plant tubers in late winter to early spring once the soil is around 8 to 15 degrees. Dig the tubers as needed from May through winter, as...
Days to harvest
about 20 weeks
Sunlight
Full sun (6+ hours). Tolerates partial shade but tuber production is reduced. Plants grow 2-3m tall and can shade other crops.
Water needs
Drought tolerant once established. Water regularly during tuber formation (summer-autumn)...
Spacing
35cm apart, 60cm between rows
Soil pH
5.8-7.5

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

This Jerusalem Artichoke guide is written for the Cold / Highland zone, which takes in Canberra, Cooma and Bright. Somewhere else? Your postcode picks the right one.

Not your zone? Cairns Brisbane Sydney Melbourne Alice Springs Perth

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

Jerusalem Artichoke

Photo: Wikimedia Commons

Jerusalem artichokes (sunchokes) are one of the easiest and most productive root vegetables for Australian gardens. A perennial sunflower relative that produces knobby, nutty-flavoured tubers underground. Virtually indestructible once established, producing heavy crops with almost zero maintenance. The catch: they are notoriously invasive, and the inulin they contain causes flatulence in many people. Plan your planting site carefully.

See what grows now in your own postcode

Best Planting Window for Cold / Highland

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- - - - - - - P P - - -

P = Planting window

Plant tubers in late winter to early spring once the soil is around 8 to 15 degrees. Dig the tubers as needed from May through winter, as they keep best in the ground.

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Current Growing Conditions

Soil temperature: 13.4°C (optimal range: 6–25°C) ✓ Ready to plant

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

What this month normally looks like

In October the Cold / Highland zone normally runs 20°C by day and 7°C overnight, with about 58 mm of rain over 7 or 8 wet days. The coldest October night on record across the zone was -6.4°C, so a late frost is not out of the question. Averages 1991 to 2026, 15 postcodes, SILO.

How to Grow Jerusalem Artichoke in Cold / Highland Australia

When to Plant

Plant tubers in late winter to early spring once the soil is around 8 to 15 degrees. Dig the tubers as needed from May through winter, as they keep best in the ground.

Soil
Tolerates almost any soil but produces best tubers in loose, well-drained soil with moderate organic matter. Thrives in sandy loam to clay loam. Grows in poor soils where other crops fail. Deep soil produces larger tubers.
pH Range
5.8-7.5
Sunlight
Full sun (6+ hours). Tolerates partial shade but tuber production is reduced. Plants grow 2-3m tall and can shade other crops.
Spacing
35cm apart, 60cm between rows
Watering
Drought tolerant once established. Water regularly during tuber formation (summer-autumn) for larger yields. Weekly deep watering in dry spells. Overwatering is rarely an issue.

Companion plants: Corn (similar height/culture), Sunflower, Pumpkin

Avoid planting near: Low-growing crops that will be shaded (lettuce, strawberry)

Grow before, grow after

Jerusalem Artichoke belongs with the root crops, the roots and alliums turn of a four turn bed rotation.

Grow before it
Fruiting crops (Tomato, Capsicum, Zucchini)
Grow after it
Legumes (Beans - Dwarf, Peas, Broad Beans)

Give the bed 3 turns before root crops go back in. Roots fork and go leafy in fresh manure, so they take the bed after the heavy feeders have used it.

Cold / Highland Growing Tips for Jerusalem Artichoke

Recommended Varieties

  • Fuseau
  • Common
  • Dwarf Sunray

Key Challenges

  • Short growing season
  • Late frosts damaging young shoots

Pro Tips

  • Plant after last frost (typically October in Canberra)
  • Mulch heavily over tuber zone in late autumn for insulation
  • Harvest any time after tops die back. Tubers are frost-hardy in the ground

Harvesting Jerusalem Artichoke

When ready: Harvest after the stems die back from frost or natural senescence (usually May-June). Tubers are mature when plants have flowered and tops begin to yellow. Approximately 140-150 days from planting.

How to harvest: Cut dead stems to 10cm. Dig carefully with a garden fork, starting well outside the stem base. Tubers spread laterally up to 40cm from the main stem. Any tuber left in the ground WILL regrow. Harvest thoroughly if you want to contain the patch.

Where to next

Also worth sowing in the cold and highland zone this October: Sweet Corn, Beetroot, Chilli Peppers and Cucumber.

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Common Questions About Jerusalem Artichoke

When do you plant jerusalem artichoke in Australia?

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

What else is jerusalem artichoke called?

Jerusalem artichoke is the usual Australian name. Overseas seed packets and recipes call it sunchoke, sunroot. 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 Cold / Highland zone, Canberra is its reference city.