How to Grow Chinese Artichokes Canada

By the SoilCommander Editorial Team, under the guidance of Nitin Sharma, Co-Founder · · How we check our facts

On this page
  1. Chinese Artichoke (Stachys affinis)
  2. Soil & Growing Conditions
  3. Growth Stages
  4. Quick Facts
  5. Harvest & Storage
  6. Plan your Chinese Artichokes planting
  7. What the research guides add
  8. Chinese artichoke in Canada: climate data
  9. Growing Chinese Artichoke in another region
  10. Sources
  11. Frequently Asked Questions

In Canada, chinese artichokes are ready to harvest 150–210 days after planting.

Chinese artichokes (Stachys affinis) — Perennial, grown as an annual root crop and lifted through the winter.

Unlike an annual crop, the work here is front-loaded into establishment: get the planting and the site right and the same plants crop for several seasons.

Core growing advice on this page is checked against named horticultural sources — see References.

Chinese Artichoke (Stachys affinis)

Freshly dug Chinese artichoke tubers showing their knobbly spiral ridges, still soil-covered — “Crosnes” by Jonathan (Wikimedia Commons) is licensed under CC BY-SA 3.0.

Also known as: Crosne · 2 sources cited · Verified

Soil & Growing Conditions

Chinese artichoke in flower, carrying pink-purple mint-family spikes — “Stachys affinis kz02” by Krzysztof Ziarnek, Kenraiz is licensed under CC BY-SA 4.0.
“Stachys affinis kz02” by Krzysztof Ziarnek, Kenraiz is licensed under CC BY-SA 4.0.

Water: Full sun on an east-, south- or west-facing aspect (RHS); PFAF adds that it will also take light shade. Keep the soil moist through the growing season, because summer moisture is what decides tuber size. Tolerant of acid, neutral and alkaline soils alike.

Growth Stages

Close view of a Chinese artichoke flower spike — “Stachys sieboldii0” by Wikimedia Commons contributor is licensed under CC BY-SA 3.0.
“Stachys sieboldii0” by Wikimedia Commons contributor is licensed under CC BY-SA 3.0.
Stage Notes
Planting tubers Plant tubers in spring, points upwards, 4-8cm deep in fertile, humus-rich, well-drained soil in full sun. PFAF plants out in March. Divide and plant while the tubers are still dormant.
Shoot emergence and leafing Low mint-family foliage appears and the plant begins running underground. Keep it weeded early; once it is away it covers the ground itself.
Runner and tuber formation The work happens out of sight, at the ends of the rhizomes and stolons. Steady summer moisture through this stage is what decides tuber size.
Die-back and harvest Top growth dies down from October. RHS harvests from November as needed. Lift a few plants at a time and leave the rest in the soil, which keeps them in better condition than any shed will.

Quick Facts

Freshly dug Chinese artichoke tubers showing their knobbly spiral ridges, still soil-covered — “Crosnes” by Jonathan (Wikimedia Commons) is licensed under CC BY-SA 3.0.
“Crosnes” by Jonathan (Wikimedia Commons) is licensed under CC BY-SA 3.0.
Factor Value
Time to harvest 150-210 days
Soil texture Undemanding. RHS lists chalk, clay, loam and sand as all suitable; PFAF adds light, medium and heavy soils, preferring well drained. A fertile, humus-rich soil gives the best tubers.
Drainage Moist but well drained. The plant takes winter wet better than most root crops, which is part of why the tubers can be left in the ground.
Lifecycle Perennial, grown as an annual root crop and lifted through the winter.
Edible parts tubers

Harvest & Storage

A mass of cleaned white Chinese artichoke tubers — “Crosnesdujapon” by Idealites is licensed under CC BY-SA 4.0.
“Crosnesdujapon” by Idealites is licensed under CC BY-SA 4.0.

When to pick: Wait for the top growth to die back. PFAF gives 5-7 months from planting to tuber development, with harvest from October onwards; RHS says tubers can be harvested from November as they are needed. Lift only what you want at a time, because the tubers shrivel quickly once out of the ground. Expect about 1kg per square metre, and go carefully with the fork: every small tuber left behind will grow next year.

Storage

Leave them in the ground and dig as needed through winter. The tubers tolerate freezing, and out of the soil they lose condition within days.

Plan your Chinese Artichokes planting

When to sow and plant Chinese Artichokes depends on your own frost dates. Check the Canada vegetable planting calendar. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.

What the research guides add

Chinese artichoke (Stachys affinis) growing in a garden
Chinese artichoke (Stachys affinis) growing in a garden. Photo: “Kluse - Stachys affinis - Knollenziest 05 ies” by Frank Vincentz, CC BY-SA 3.0.

Chinese artichoke is grown for its small tubers, and the RHS notes when they are ready.

  • In summer purple-pink flowers are borne on erect flower stalks. (RHS)
  • Tubers can be harvested from November as they are needed. (RHS)
  • Propagate by division. It may be susceptible to slugs and is generally disease-free. (RHS)

Chinese artichoke in Canada: climate data

Station Last spring frost First fall frost Frost-free days
Edmonton, AB 24 May 12 Sep 110
Winnipeg, MB 23 May 22 Sep 121
Charlottetown, PE 16 May 17 Oct 153
Toronto, ON 30 Apr 16 Oct 168
Vancouver, BC 18 Mar 10 Nov 237

Frost dates and frost-free days are the median values for the stations in Environment and Climate Change Canada climate normals with the highest data-quality rating (1981–2010 normals).

Sources for this section

Section researched and checked on 25 October 2026 by the SoilCommander Editorial Team. How we check facts: editorial policy.

Growing Chinese Artichoke in another region

Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.

Sources

The full list of 2 sources behind this guide (Plants For A Future (PFAF), Royal Horticultural Society) is in the references of our UK guide to chinese artichokes; they describe the plant itself, which is the same wherever it grows.

Frequently Asked Questions

How long do chinese artichokes take to grow?

Typically 150–210 days, depending on cultivar and growing conditions.

Plan next season before the problems start

Short-season growing is arithmetic before it is technique: days to maturity against frost-free days decides what will finish at all. The Canada Garden Planner does that subtraction for your region before you sow.

Get the Canada Garden Planner →

Instant PDF download · Written for Canadian growing conditions

SoilCommander Editorial Team — under the guidance of Nitin Sharma, Co-Founder

Every growing guide is checked against RHS, USDA Cooperative Extension, and other named horticultural authorities before publishing. How we check our facts.

How this guide is put together

The growing data on this page — sowing windows, pests, diseases, soil and site requirements — comes from named horticultural sources, listed in References below, checked against Canadian hardiness-zone and frost-date data, with provincial agriculture and university extension sources cited directly where one exists for a crop. An automated pipeline assembles that verified data into the page you're reading: it selects which facts to lead with and builds the surrounding prose and layout. It does not invent a date, a source or a number — where a verified value for a field isn't available, the page leaves it out rather than guessing. A person reviews and publishes each page; nothing goes live unverified.

Vegetable Growing Guides Canada

Last verified 2026-10-25

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