Jerusalem artichoke
Helianthus tuberosus
In a typical UK garden, plant out early February to late April, and harvest early October to early March.
When to sow, plant and harvest
Last frost around 20 April, first frost around 31 October.
- Plant out
- early February to late April
- Harvest
- early October to early March
Growing facts
- Spacing
- 30 cm apart, rows 100 cm apart
- Square foot
- 1 per square (30 cm squares)
- Sowing depth
- Grown from plants, sets or crowns
- Ready in
- 140 to 200 days from planting
- Grows to
- 2.5 m
- Hardiness
- Hardy to about -20 °C
- Sun
- Copes with some shade
- Crops for
- Several years (perennial)
Growing tip
Give them a bed of their own, as any tuber left behind regrows; in windy spots, cut stems to 1.5 m in late summer.
More roots
Where these figures come from
Every crop in VegLog was checked against published growing advice. Dates are worked out from average frost dates, so they shift with your garden. For jerusalem artichoke, we used:
Grow jerusalem artichoke with VegLog
Add jerusalem artichoke to a bed and VegLog reminds you when to sow, plant out and pick, timed to your own town's frost dates.
