Holly's Homestead — Perennial Vegetable
Horseradish
Armoracia rusticana · Brassica family
DIFFICULTY Easy (can be invasive)
TYPE Perennial root
MATURITY Usable from year one
TYPE Perennial root
MATURITY Usable from year one
Sun
Full–part sun
Water
Regular
Soil pH
6.0–7.5
Spacing
45–60cm
Depth
root cutting, angled
01Contain the roots
Horseradish spreads readily from any root fragment left in the soil — plant it in a large buried container or a dedicated, contained bed rather than the open garden.
02Planting
Method
Plant root cuttings at a slight angle, crown end up.
Soil
Rich, deep, well-drained.
Timing
Plant in early spring.
03Growing care
- Contain the roots — even small pieces left behind will resprout.
- Water regularly through the growing season.
- Remove flower stalks if they appear, to keep energy in the root.
- Dig the whole root when harvesting to reset the bed if needed.
04Problems
- Spreading beyond bounds — the main issue; keep it contained.
- Flea beetle — small holes in leaves; largely cosmetic.
- Leaf spot — humid weather; improve airflow.
- Few other pest issues — generally trouble-free.
05Harvest & storage
Signs
Roots are usable any time after the first year, best after a frost.
Method
Dig the whole root, or cut a piece and leave the rest to keep growing.
Curing
None needed.
Storage
Fridge, several weeks; grate fresh as needed for best flavour.
06Companions & rotation
Plant nearby
Potato (said to deter pests)Avoid nearby
Anywhere containment is difficultRotation note
Not applicable — permanent, contained bed recommended.