Vegetables · Perennial
Jerusalem artichoke
Asteraceae
At a glance
- Plant spacing
- 50 cm
- USDA zones
- 3a–9b
- Frost-sensitive
- no
- Growth duration
- 30 weeks
Which beds suit?
- Sun (prefers)
- full sunAlso okay:partial shade
- Soil (prefers)
- loamyAlso okay:claysandyraised-bed mix
- Drainage (prefers)
- normal
Seed & start
Perennial
Plant once, returns every year.
Stachi's tip
Jerusalem artichoke is the unplanned permanent installation — plant once and it returns for 10 years even when you want it gone. Harvest tubers from October.
The plant's year: sowing, transplanting, harvest
Sowing
No sowing weeks recorded.
Transplanting
Harvest
Good neighbours
No fixed companion partners — easy to mix.
Limited evidence. This value is not backed by a specialist source — treat it as a pointer.
Avoid these neighbours
No known conflicts.
Limited evidence. This value is not backed by a specialist source — treat it as a pointer.
Good pre-cultures
Stachi has no specific pre-cultures recorded.
Sources
- LLM-Baseline+gpt-5-review
- LLM-Baseline-Intercrop
- LLM-Baseline-2026-05-09 yieldKg
- LLM-Baseline-2026-05-10 family-zehrer
- LLM-Baseline-2026-05-10 sun-soil-drainage
- Gartenakademie Rheinland-Pfalz – Topinambur (https://www.gartenakademie.rlp.de/Gartenakademie/Themen/Boden-und-Pflanze/Topinambur)
- Hochschule Weihenstephan-Triesdorf – Infodienst Gemüse und Kräuter im Portrait (Topinambur) (https://www.hswt.de/fileadmin/Redaktion/Hochschule/Organisation/Zentrale_Einrichtungen/Weihenstephaner_Gaerten/Infodienst_Weihenstephan_Spezial_-_Gemuese_und_Kraeuter.pdf)
Where these figures come from
- Timing
- Horticulturally established — consistent across the cited standard works.
- Spacing
- Horticulturally established — consistent across the cited standard works.
- Companion planting
- Limited evidence. This value is not backed by a specialist source — treat it as a pointer.
- Crop rotation
- Limited evidence. This value is not backed by a specialist source — treat it as a pointer.
- Yield
- Limited evidence. This value is not backed by a specialist source — treat it as a pointer.
Sources: LLM-Baseline+gpt-5-review · LLM-Baseline-Intercrop · LLM-Baseline-2026-05-09 yieldKg · LLM-Baseline-2026-05-10 family-zehrer · LLM-Baseline-2026-05-10 sun-soil-drainage · Gartenakademie Rheinland-Pfalz – Topinambur (https://www.gartenakademie.rlp.de/Gartenakademie/Themen/Boden-und-Pflanze/Topinambur) · Hochschule Weihenstephan-Triesdorf – Infodienst Gemüse und Kräuter im Portrait (Topinambur) (https://www.hswt.de/fileadmin/Redaktion/Hochschule/Organisation/Zentrale_Einrichtungen/Weihenstephaner_Gaerten/Infodienst_Weihenstephan_Spezial_-_Gemuese_und_Kraeuter.pdf)
Articles about this plant
Overwintering artichokes: why they freeze faster in a raised bed than in open ground
Frau Schneider's artichoke grew real buds for the first time this summer – now she's worried the plant won't survive the first hard frost in her raised bed. She's right to worry: raised-bed soil freezes differently from garden soil. Here's how to protect the rootstock properly.
Harvesting salsify: why your hands turn black – and what else actually matters
Frau Schneider dug her first salsify harvest without gloves and had dark brown fingertips for three days straight. The sap is harmless but stubborn — here's what actually matters when digging, peeling, and storing it.
Harvesting Jerusalem artichoke: why you dig after frost — and never find every tuber
Jerusalem artichoke is easy to grow, pretty, and almost impossible to get rid of again. Here's why the first proper frost weekend is the best time to dig, and what to do so your raised bed doesn't turn into a forest of it next year.
Products mentioned in this post
- Plantura organic tomato seed set (10 varieties)Open-pollinated, good germination — robust for raised beds.
- Organic tomato seed set, 14 varieties
- Organic heirloom tomato seed set (Demeter, 12 varieties)
- Organic vegetable seed set, 10 varietiesCucumber, tomato, beetroot, broccoli, carrot, chard & more.