How to grow Jerusalem Artichoke in the UK
Helianthus tuberosus
Jerusalem Artichoke (Helianthus tuberosus) is a vegetable that grows well in UK gardens. Plant once, harvest forever — tubers always leave some behind. Site carefully, can be invasive. Causes wind! This guide covers when and how to sow Jerusalem Artichoke, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
When to sow & grow Jerusalem Artichoke
Sowing and harvest window through the year (UK):
Jan Harvest | Feb Harvest | Mar Plant · Harvest | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov Harvest | Dec Harvest |
Soil, position & care
- Soil
- Any reasonable soil
- Soil pH
- 6.0–7.5
- Position
- Sun or part shade; tall — use as a windbreak
- Sowing depth
- 12 cm
- Spacing
- 30 cm apart
- Sowing
- Plant tubers Feb–Apr; very vigorous, can become invasive
- Growing
- Earth up and stake on windy sites
- Harvest & upkeep
- Lift tubers as needed through winter; save a few to replant
- Watch for
- Slugs; otherwise trouble-free
Companion planting for Jerusalem Artichoke
No specific companion notes for this plant.
Add Jerusalem Artichoke to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Jerusalem Artichoke FAQs
How much sun does Jerusalem Artichoke need?
Jerusalem Artichoke prefers full sun (6+ hrs direct).
When is Jerusalem Artichoke ready to harvest?
Jerusalem Artichoke is typically ready to harvest in January, February, March, November, December in the UK.
Is Jerusalem Artichoke easy to grow?
Moderate. Plant once, harvest forever — tubers always leave some behind. Site carefully, can be invasive. Causes wind!