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Can You Grow Horseradish in Alaska?

US · USDA Zone 4b · zones 1a, 1b, 2a, 2b

Grows well here

Horseradish grows well here and is virtually impossible to kill — a great low-effort perennial.

Plant zones

3a–9a

Alaska last frost

mid-April

Alaska first frost

mid-October

Days to harvest

300–365 days

When to plant Horseradishes in Alaska

Direct sow

Oct 1 – Oct 31

Harvest

Jun – Jul (following year)

Dates are approximate, based on Alaska's average frost dates. Your exact yard may vary by microclimate.

About Horseradish

Horseradish is a vigorous, nearly indestructible perennial grown for its pungent taproot — the fresh stuff blows store-bought away. Plant it where you want it to stay.

Plant root cuttings in spring, burying on a slight angle. Harvest roots in fall after a few frosts for best heat. It spreads — contain it in a pot or dedicated bed.

Full horseradish growing guide →

Gardening in Alaska

Alaska ranges from subarctic to maritime climates. The interior has very short summers but intense sunlight. Coastal areas are milder. Cold-hardy crops and greenhouses are key.

See what grows well in Alaska →

Frequently asked questions

Can you grow Horseradish in Alaska?

Horseradish grows well here and is virtually impossible to kill — a great low-effort perennial.

What zone is Alaska?

Alaska spans USDA Zone 4b (1a, 1b, 2a, 2b).

When do you plant Horseradishes in Alaska?

Plant Horseradishes Oct 1 – Oct 31, harvest Jun – Jul (following year).