Photo: Krzysztof Golik — CC BY-SA 4.0 · source
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Survives zone 3 through 8
⚠ STALKS ONLY — leaves are toxic (oxalates). Must be cooked. Sharp and superb. Only the leaf stalks (petioles) are edible; the leaf blades are toxic** (soluble oxalates/anthraquinones)** · Herbaceous; vernalization differs from fruit-tree chill.
- Hardiness
- Zone 3 to 8
- Habit
- Herb
- Edible part
- Shoot, Leaf
- Ripens
- April–June
- Mature size
- Large crown; containerable in a big pot
- Light
- Full sun to partial (one of the more shade-tolerant crops)
- Soil pH
- 6.0–6.8
- Environment
- Montane
- Status
- Cultivated
- Years to fruit
- 2 yrs (don't crop in yr 1)
- Pollination
- Self-fertile