Scottish thistle

Onopordum acanthium

Scottish thistle - Onopordum acanthium

Common Name: Scottish thistle
Genus: Onopordum
Species: acanthium

Category: Annuals & Biennials
Growth Rate: Average
Features: Has interesting foliage, Good for wildlife, A good architectural plant

Hardiness: HardyHeight: 3.00 m (300 cm)
Sun/Shade: Full sunSpread: 1.00 m (100 cm)

Foliage Type: Semi EvergreenFlower Colour: Purple, White
Foliage Colour: Grey/SilverFlowering Period: July & August

Soil Type: Normal/Loam or Sandy/Light or Chalky/Alkaline
Soil Moisture: Dry, well drained or Moist, but well drained

  • Large pale-purple or occasionally white thistle-like flowerheads appear in July and August above spiny-toothed grey-green leaves. This biennial native Scotch thistle makes an architectural statement in a sunny gravel or wildlife garden. The ripening seedheads act as a magnet for goldfinches and the plant self-seeds freely.

  • Garden care: Use beer traps or environmentally- friendly slug pellets to protect the tender young foliage against damage from slugs or snails.