Horseradish Growing Guide
Horseradish At a Glance
Difficulty
Easy
Category
Vegetable
Sun Exposure
Full Sun
Frost Tolerance
Frost Hardy
Cold Hardiness
Survives to -34°C
Plant Family
Brassicaceae
Growing Season
Cool Season
Plant Lifecycle
Perennial
How to Start It
★ Recommended for beginners
Set a 15–20 cm root cutting (fat end up) at a 45° angle, top about 5 cm deep, in spring. It'll be ready that autumn. Contain it — any root fragment regrows into a new plant.
Grown from root cuttings, not seed. WARNING: horseradish is extremely vigorous and spreads from any root left in the ground — plant it in a sunken bucket or a dedicated bed, or it'll take over. One plant supplies a household.
When To Start
Horseradish likes cool weather. Sow it in early spring, as soon as the ground can be worked.
We do not have exact sowing dates for this one yet.
When should you plant Horseradish?
Your planting dates depend on your local climate. Sign up and add your location to unlock personalized dates.
Your Horseradish Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
Your Horseradish Calendar
Set your location to turn these into exact dates and reminders.
Plant horseradish root cutting (contain it!)
2 weeks before your last frost
Dig horseradish roots (late autumn, after frost)
1 week after your first frost· every year
The Journey Ahead
Horseradish's Lifecycle
Seedling
Mature Plant
Seed Production
Step 1
Prepare Your Space
8 cm
Seeding Depth
45 cm
Plant Spacing
75 cm
Row Spacing
Vertical Growing
No.
Succession Planting
No.
Good Companions
Bad Companions
Step 2
Planting & Sprouting
Growing Tips
- 1Horseradish thrives on neglect in full sun and deep soil.
- 2The only real skill is containing it: a bottomless bucket or its own corner, and dig it out thoroughly each year.
- 3Remove flower stalks to keep energy in the root.
Seedling Phase
Step 3
Growth & Maturity
90 cm
Mature Height
60 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
Harvest Window
30 days
When to Pick
Dig roots in late autumn after frost, for the hottest flavour
How to Harvest
- 1Dig the main roots in late autumn after a frost or two (cold sharpens the heat).
- 2Save a side-root to replant.
- 3Grate it outdoors or in a well-ventilated spot — the fumes are fierce.
Step 5
Saving Seeds
Seed Production
Ready to grow this?
Grow horseradish with us.
This page is free and stays free. An account adds the one thing a guide cannot do on its own: your own frost dates, so it tells you the weeks to sow horseradish where you live.
