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Can You Grow Horseradish in Hawaii?
US · USDA Zone 12b · zones 9b, 10a, 10b, 11a, 11b, 12a, 12b
Horseradish needs cold to develop its signature bite — in very warm zones it stays mild and spreads rampantly.
Plant zones
Hawaii last frost
Hawaii first frost
Days to harvest
When to plant Horseradishes in Hawaii
Direct sow
Harvest
Dates are approximate, based on Hawaii'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.
Gardening in Hawaii
Hawaii is tropical with year-round warmth. Zone varies dramatically by elevation — coastal areas are Zone 11-12 while Mauna Kea slopes reach Zone 9. Year-round growing throughout.
Frequently asked questions
Can you grow Horseradish in Hawaii?
Horseradish needs cold to develop its signature bite — in very warm zones it stays mild and spreads rampantly.
What zone is Hawaii?
Hawaii spans USDA Zone 12b (9b, 10a, 10b, 11a, 11b, 12a, 12b).
When do you plant Horseradishes in Hawaii?
Plant Horseradishes Oct 1 – Oct 31, harvest Jun – Jul (following year).