Lawn Guardian

When to Plant Horseradish

Armoracia rusticana

root_vegetableZones 3–9beginner

Vigorous perennial with intensely pungent roots used as a condiment. Plant in a contained area as it spreads aggressively. Easy to grow and nearly impossible to kill.

Planting calendar

Direct sow / transplant

4 weeks before your last spring frost.

Plant root cuttings in spring; harvest in fall; plant in a contained area as it spreads aggressively

Spacing & harvest

Companion planting

Plant near

Get horseradish planting dates for your exact zone

Lawn Guardian turns this guidance into a schedule timed to your USDA zone and this week's actual weather — and adapts every time you log what you've done.

Get your free plan
Sources: Purdue University Turfgrass Science: Use Growing Degree Days to Better Time Your Applications · University of Missouri Extension: Cool-Season Grasses: Lawn Maintenance Calendar · University of Minnesota Extension: Pre-emergent Herbicides for Crabgrass Control in Lawns