Overview
Cirsium tuberosum is a clump forming, upright perennial herb in the genus Cirsium, part of the Asteraceae family, with deciduous foliage. It typically grows around 0.6 m tall. Cirsium tuberosum grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H7. Suggested uses include wildlife gardens, wildflower meadows, cottage and informal gardens, flower borders and beds and cut flowers. It is native to France, Germany, Great Britain, Italy, NW. Balkan Pen., Portugal, Spain and Switzerland.
About
Cirsium tuberosum is a clump-forming, upright cultivar of the Cirsium genus, which belongs to the Asteraceae family. This deciduous plant thrives in full sun and is adaptable to a wide range of soil types, including chalk, clay, loam, and sand, with soil pH ranging from acid to alkaline. It prefers moist but well-drained conditions and can be grown in both exposed and sheltered locations with any aspect. Hardy to UK zone H7, it is suitable for wildlife gardens, wildflower meadows, cottage and informal gardens, flower borders, and cut flowers. Propagation is by seed sown in pots in a cold frame in spring or by division in spring or autumn.
Wikipedia contributors, CC BY-SA 4.0 — Cirsium tuberosum
About the genus
Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more precisely known as plume thistles. These differ from other thistle genera in having a seed with a pappus of feathered hairs on their achenes.
Wikipedia contributors, "Cirsium", CC BY-SA 4.0 — Cirsium
Growing conditions
Best soil and position for Cirsium
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, East-facing, West-facing, North-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
Cirsium tuberosum size, habit and characteristics
- Plant type
- Perennial herb
- Habit
- Clump forming, Upright
- Foliage
- Deciduous
- Height
- 0.6 m
- Suggested uses
- Wildlife gardens, Wildflower meadows, Cottage and informal gardens, Flower borders and beds, Cut flowers
- Native to
- France, Germany, Great Britain, Italy, NW. Balkan Pen., Portugal, Spain, Switzerland
Care notes
Pruning and caring for Cirsium tuberosum
- Propagation
- Seed sown in pots in a cold frame in spring, Division in spring or autumn
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free, May be susceptible to powdery mildews
Frequently asked questions
Where is the best place to plant Cirsium tuberosum?
Cirsium tuberosum prefers full sun. It suits exposed and sheltered positions.
What soil does Cirsium tuberosum need?
Cirsium tuberosum is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
How big does Cirsium tuberosum grow?
Cirsium tuberosum reaches a height of 0.6 m.
Is Cirsium tuberosum hardy in the UK?
Cirsium tuberosum has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Cirsium tuberosum?
Seed sown in pots in a cold frame in spring, Division in spring or autumn.
