Not the plant you're looking for? Search over 300,000 plants
Herbaceous Perennial

Cynara cardunculus (Scolymus Group) 'Romanesco'
  • RHS Plants for pollinators

cardoon 'Romanesco'

An architectural perennial up to 2m tall with silvery-grey to green divided leaves and edible, purple-flushed, greyish-green flowerbuds held in rounded heads which open to purple, thistle-like flowerheads from summer into autumn

Join the RHS

Become an RHS Member today and save 25% on your first year

Join now
Buy this plant
Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
1–1.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Grey Silver Green
Summer Purple Grey Silver Green
Autumn Purple Grey Silver Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Asteraceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright
Genus

Cynara are robust thistle-like plants with grey-hairy, pinnately lobed leaves and globose purple flower-heads

Name status

Unresolved

How to grow

Cultivation

Grow in fertile, well-drained soil in full sun; shelter from strong winds. In very cold winters apply a dry mulch. For more advice, follow globe-artichokes cultivation

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types
  • Architectural
  • Cottage and informal garden
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds
  • Wall side borders
Pruning

Cut down flowered stems and old foliage in autumn when cropping is over

Pests

May be susceptible to snails, slugs and blackfly (black aphid) when young

Diseases

Generally disease-free

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.