Growing Horseradish in Australia: The Complete Guide
Horseradish is an easy (can be invasive) perennial vegetable to grow, needing full–part sun with regular watering.
Horseradish is one of the easy (can be invasive) additions to a home garden, and this article walks through everything behind our one-page printable guide in a bit more depth.
Contain 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.
How to Plant Horseradish
Method — plant root cuttings at a slight angle, crown end up. Soil — rich, deep, well-drained. Timing — plant in early spring.
Keeping It Growing Well
A few things matter most here:
- 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.
Common Problems
The key things to get right:
- 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.
When and How to Harvest
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.
That's the full picture behind horseradish. The printable A4 version of this guide — with the quick-reference gauges and diagram in one page — is available on the main guide page below.