Photo: Original book source: Prof. Dr. Otto Wilhelm Thomé Flora von Deutschland, Österreich und der Schweiz 1885, Gera, Germany — Public domain · source
Survives zone 3 through 9
Harvest calendar
Ripens: Leaves in spring; roots in autumn of the first year
Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.
Roots roasted and ground as a coffee substitute; forced blanched shoots (chicons) and young leaves eaten as a bitter salad or cooked green; flowers edible.
- Hardiness
- Zone 3–9
- Habit
- Herb
- Edible part
- Root, Shoot, Flower, Leaf
- Ripens
- Leaves in spring; roots in autumn of the first year
- Mature size
- Taprooted perennial herb, flowering stems to ~1.5 m
- Light
- Full sun
- Soil pH
- 5.8–7.0
- Environment
- Temperate
- Native range
- Europe, western Asia and North Africa, on roadsides, chalk grassland and rough disturbed ground; naturalised across North America and Australia, where the sky-blue flowers along summer roadsides are almost always this plant.
- Status
- Both wild and cultivated
- Years to fruit
- 1 yr
- Growth speed
- Fast — a sowing makes a harvestable root in one season
- Spacing
- 25 cm (10 in) apart — about 16 per m² (15 per 10 sq ft)
- Leaf shape
- A basal rosette of coarse, lobed, dandelion-like leaves, the stem leaves smaller and clasping the rigid, almost woody flowering stem. Cut leaves and stems bleed a bitter white latex.
- Root system
- A deep fleshy taproot 20–30 cm long — the part roasted for coffee, and the store that drives the forced chicon. It is also why chicory survives drought and mowing, and why a broken root fragment regrows.
- Fruit description
- Not a fruit crop: the heads set small dry achenes. The flowers open at dawn and close by midday, and are edible as a garnish.
- Propagation
- Seed, direct-sown — the taproot resents transplanting. For chicons, lift the roots in autumn, trim the tops, and force them in the dark at 10–15°C.
- Pollination
- Self-fertile
The edible parts listed above are a starting point, not a field guide. Identify a plant with certainty — ideally against a local authority — before eating any part of it, and read the full disclaimer. Spotted something wrong? Report it.
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