Armoracia rusticana Seeds | Horseradish Root Slice
LATIN NAME: Armoracia rusticana
COMMON NAME: Horseradish
Plant Profile
Horseradish (Armoracia rusticana) is a hardy perennial in the cabbage family. Horseradish sets its large, oblong, wavy-edged leaves and dense spikes of small, white flowers, and the whole plant stands in the bold, leafy clumps. It is a plant of open, sunny, deep, rich, moist, well-drained ground. Bees find the flowers quickly, and that pollinator traffic is a garden benefit in its own right. Add these qualities together and you have a species well worth a place in the garden.
Science & Biotechnology
Horseradish’s bite is a chemical defence system in action: intact tissue holds the glucosinolate sinigrin separately from the enzyme myrosinase, and grating brings them together to generate allyl isothiocyanate — the volatile that clears sinuses and, in laboratory work, inhibits a broad range of bacteria and fungi. Germany’s Commission E approved horseradish as adjunctive therapy for respiratory and urinary tract infections, and a standardised horseradish–nasturtium combination has trial support for reducing antibiotic use in recurrent sinusitis and cystitis. Once planted it is effectively permanent, which gardeners discover about a year too late.
Seed science, comparative botany and horticultural selection all touch on Armoracia rusticana, a representative of the cabbage family with clear practical value. Because it has been grown for so long, its garden habits are thoroughly documented.
Uses & Benefits
Gardeners value Horseradish for its ornamental character, and the plant also fits naturally into herb, vegetable and cutting gardens. Horseradish is a fine, bold plant of kitchen garden and study collection. It is a fine, bold plant of open, sunny, deep, rich, moist, well-drained garden. Give young plants deep, rich, moist bed, and bold clumps will fill kitchen garden. Beyond the establishment year, its needs are simple and few.
Horseradish root’s fiery isothiocyanates make it a classic condiment and a traditional remedy for sinus congestion; modern herbal combinations of horseradish with nasturtium have clinical support for sinus and urinary tract comfort.
Growing from Seed
Horseradish is one of those generous plants that come along well from seed. Surface-sow onto a light, well-drained compost, dust over a thin covering, and keep evenly moist and sunny until the seedlings show. Pot the young plants on as they grow, harden them off gradually, and plant them into their final positions when sturdy.
Our Take
Horseradish repays a little patience at sowing time with plenty of garden presence later.
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Related Reading
Gardeners who grow Horseradish often pair it with these related subjects: