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How to Grow Horseradishes Canada | Planting & Establishment

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Horseradish (Armoracia rusticana)

A large dock-like horseradish leaf close-up — “Armoracia rusticana Chrzan pospolity 2020-06-07 07” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons

4 sources cited · Verified

The short answer

Site
soil pH 6–7.5
Biggest risk
Club root

Horseradishes (Armoracia rusticana) — herbaceous perennial.

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 and university-extension sources — see References.

Soil & Growing Conditions

A large dock-like horseradish leaf close-up — “Armoracia rusticana Chrzan pospolity 2020-06-07 07” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Armoracia rusticana Chrzan pospolity 2020-06-07 07” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.

Soil pH range

6 7.5

Span reflects genuine variation between the cited authorities, not a single agreed figure.

Growth Stages

A horseradish flower cluster surrounded by leaves — “Armoracia rusticana Chrzan pospolity 2020-06-07 05” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Armoracia rusticana Chrzan pospolity 2020-06-07 05” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.
Stage BBCH Notes
Propagation 0 Propagate by seed or by root division during winter (RHS).
Leaf growth 3 Forms large dock-like leaves and a vigorous, spreading clump, reaching up to 60cm tall and wide (RHS).
Flowering 6 White flowers bloom in early summer (RHS).
Dormancy and root harvest 8 Takes 2-5 years to reach full maturity; leaves die back in autumn, and the white root is harvested autumn and winter before re-sprouting the following spring (RHS).

Quick Facts

A tall horseradish plant growing in a grassy field — “Armoracia rusticana Chrzan pospolity 2020-06-07 01” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Armoracia rusticana Chrzan pospolity 2020-06-07 01” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.
Factor Value
Soil pH 6 - 7.5
Optimal growing temp 15.6-18.3C
Drainage Chalk, Clay, Loam, Sand; light, fertile, deep, moist but well-drained; high in organic matter
Lifecycle herbaceous perennial
Edible parts root

At a Glance

A large dock-like horseradish leaf close-up — “Armoracia rusticana Chrzan pospolity 2020-06-07 07” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Armoracia rusticana Chrzan pospolity 2020-06-07 07” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.
Armoracia rusticana Horseradish Club root DISEASES

Harvest & Storage

A tall horseradish plant growing in a grassy field — “Armoracia rusticana Chrzan pospolity 2020-06-07 01” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Armoracia rusticana Chrzan pospolity 2020-06-07 01” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.

When to pick: Harvest begins after several frosts, which improves flavour; in long-season regions (150+ days) can be harvested at the end of the first year; roots harvested autumn/winter

Diseases

Horseradish's small white flowers — “Armoracia rusticana Chrzan pospolity 2019-05-05 05” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Armoracia rusticana Chrzan pospolity 2019-05-05 05” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.

Plasmodiophora brassicae

References

  1. country=INTL

  2. country=UK

  3. country=UK

  4. country=USA

4 independent sources are cited for this crop. Where they disagree - soil pH is the clearest case - every figure is preserved rather than averaged into false precision.

Frequently Asked Questions

What soil pH do horseradishes need?

A pH of about 6–7.5. That span reflects genuine variation between the authorities we cite rather than a single agreed figure — the References section lists each source's exact range.

What problems affect horseradishes?

Our data links 1 disease to this crop. See the sections above for each one and how to manage it.

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

Canadian vegetable growing guides · Checked against provincial agriculture & university extension guidance

Every SoilCommander guide is written and maintained by our editorial team for real Canadian growing conditions, and checked against provincial agriculture and Canadian university extension guidance, and against frost-date and growing-season data, before publication.

Vegetable Growing Guides Canada

Last verified 2026-08-29

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