Horseradish Armoracia rusticana

Common Name:
Horseradish

Description:
Horseradish is a robust, hardy perennial grown for its pungent, white taproot, widely used to add a sharp, spicy kick to culinary dishes. Its large, coarse green leaves form a vigorous clump above ground, while below, the thick root develops its signature heat and flavour, intensifying when freshly grated. Well-suited to Melbourne’s climate, horseradish thrives in full sun to part shade and prefers rich, well-drained soil with consistent moisture for optimal root development. It grows actively through spring and summer, with roots typically harvested in cooler months when flavour is strongest. This plant spreads readily via underground roots and should be grown in contained areas or pots to prevent unwanted spread. Easy to grow and low maintenance, horseradish is a rewarding addition to any productive garden.

Form:
Shrub - Clumping / Grass-like / Mounding

Mature Size:
Height: 0.6–1 m
Width: 0.6–1 m

Aspect:
Full Sun
Part Shade

Flowering:
Flowers in Summer

Flower Colour:
White

Key Attributes:
Culinary herb
Edible Root
Fast Growing
Hardy
Herbaceous
Perennial
Spreading habit – can become invasive if not contained
Suitable for Pots

Toxicity:
Generally safe for human consumption in culinary amounts; excessive consumption may cause irritation. Can be harmful to pets if consumed in large quantities.

Companion Plants:
Potatoes
Beetroot
Carrots
Cabbage
Fruit trees