How to Grow Horseradish
Armoracia rusticana
Horseradish is an extremely vigorous perennial grown for its pungent white roots used as a condiment. Plant root cuttings (thongs) 15 cm deep in spring in rich, deep soil. Once established it needs almost no care — the challenge is containing it, not growing it. Harvest roots from autumn through winter when flavour peaks. Grow in a sunken container or with root barriers to prevent it taking over the garden.
Yearly Lifecycle
Care Essentials
Mulch with compost in spring. Rarely needs additional feeding — too much nitrogen produces lush leaves but weaker roots.
Watch For
- Flea beetles on leaves (cosmetic damage only)
- Cabbage white caterpillars
- Spreading beyond intended area
Companions
Potatoes (deters potato beetles), Rhubarb, Asparagus
Track your Horseradish care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Full sun to partial shade
Full sun to partial shade. Produces the best roots in full sun but tolerates shade well. Very adaptable.
🌿 Spacing
45 cm apart, contain with barriers
Space 45 cm apart with 60 cm between rows. Contain with root barriers — any fragment left in soil regrows.
💧 Watering
Drought-tolerant once established
Water during dry spells in the first year. Once established, horseradish is extremely drought-tolerant and rarely needs supplemental watering.
🌱 Fertilizing
Compost mulch in spring, otherwise self-sufficient
Mulch with compost in spring. Avoid high-nitrogen feeds which promote leaves over roots. Generally self-sufficient in reasonable soil.
Growing Tips
Plant root thongs at an angle
Plant root cuttings (thongs) 15 cm deep at a 45° angle in spring. Use a dibber to make holes. The thicker end goes up. New shoots appear within weeks.
Contain to prevent spreading
Grow in a bottomless bucket sunk into the ground, or a raised bed lined with root barrier fabric. Any root fragment left in open soil will produce a new plant.
Harvest in autumn and winter
Dig roots from October onwards when foliage dies back. Use a fork to lift — roots go deep. Leave some root pieces in the ground for next year's crop.
Popular Varieties
Bohemian, Maliner Kren, Big Top Western, Common
Spacing & Planting
| Plant spacing | 45 cm |
| Row spacing | 60 cm |
| Mature height | 90 cm |
| Mature spread | 45 cm |
Space 45 cm apart. Extremely vigorous — consider growing in a container or raised bed with barriers to prevent spreading.
Log Horseradish in your garden — track growth, care, and harvests year after year
Start planning free