Elk thistle

Cirsium foliosum

Physical Characteristics

Cirsium foliosum is a PERENNIAL growing to 0.6 m (2ft). See above for USDA hardiness. It is hardy to UK zone 6. 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 or wet soil.

Distribution

N. America - Montana to Saskatchewan.

Habitats

Bog Garden; Cultivated Beds;

Edible Uses

Edible Parts: Leaves Oil Root Stem Edible Uses: Oil Root - cooked[61, 85, 105, 161]. About the size of a carrot, they are sweet and well-flavoured though require long preparation[207]. 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]. Plant crown[85]. No more details are given. Stems - peeled[161]. The peeled stems are a sweet potherb[207]. Tender with a sweet delicate taste212].

Medicinal Uses

None known

Known Hazards

None known