Edible Thistle

Cirsium edule

Physical Characteristics

Cirsium edule is a PERENNIAL growing to 2 m (6ft 7in). See above for USDA hardiness. It is hardy to UK zone 7. It is in flower from July to August, and the seeds ripen from August to September. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, flies, Lepidoptera (Moths & Butterflies), beetles. The plant is self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers moist soil.

Distribution

Western N. America - southwards from Canada.

Habitats

Woodland Garden Dappled Shade; Shady Edge; Bog Garden;

Edible Uses

Edible Parts: Oil Root Shoots Stem Edible Uses: Oil Root - cooked[95, 105, 161, 257]. The root is likely to be rich in inulin, a starch that cannot be digested by humans. This starch thus passes straight through the digestive system and, in some people, ferments to produce flatulence[K]. Young stems - peeled and eaten raw[46, 61, 95, 105]. Soft and sweet[161], they are considered to be a luxury food[257]. Young shoots - raw or cooked as greens[257]. Harvested in spring[257].

Medicinal Uses

None known

Known Hazards

None known