Growing in Merredin

Best time to plant horseradish in Merredin

Armoracia rusticana

Sow horseradish in Merredin in Jun to Aug.

Horseradish is grown mainly for its big, white, tapering root, used as a spice and condiment. The intact root smells of little, but cutting or grating it releases mustard oil that irritates the eyes and sinuses. This leafy perennial, related to mustard and wasabi, can reach 1.5 metres.

When to sow in Merredin

Merredin, WA is in the arid zone. Its months for horseradish apply here without a frost adjustment.

Not yet checked against a local guide.

Your local conditions can shift any months shown here, so treat them as a guide.

Frost in Merredin

Frost usually arrives in Merredin around early June and finishes by mid September. In about 1 year in 10 it comes as early as late May or as late as early October, so frost-tender crops are planned around those dates.

From its Bureau of Meteorology station, 1991 to 2020, counting a night at 2°C or lower as a frost. Frost hollows and hillsides can shift these dates by weeks, so ask the growers at your garden too.

On a shared plot: can spread

Regrows from root pieces and is very hard to remove. Grow it in a tub or ask your garden first.

Growing details

How to start
Sow directly in the bed
Sowing depth
3cm
Plant spacing
30cm
Row spacing
30cm
Height
50-90cm
Time to harvest
240 days
Frost
Hardy, takes a light frost
Sun
Full sun
Life cycle
perennial

These are typical figures, and varieties differ. Your seed packet takes priority.

Horseradish elsewhere

Horseradish across Australia