Scotch Thistle
Onopordum acanthium
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Pl. 9C72 — Onopordum acanthium
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IOverview
Overview
Scotch Thistle (Onopordum acanthium) is a biennial forb or herb that can reach heights of 1.5 meters and is native to regions including Afghanistan, Albania, Algeria, Austria, Belarus, Belgium, and other parts of Europe and Central Asia. Known for its light and airy nature, this plant thrives in well-drained soils with a pH between 7 and 7.5, making it adaptable to both sandy and clay soils. It is found across a wide range from the Mediterranean to Central Asia and beyond. Scotch Thistle is edible, with parts such as flowers, leaves, and stems being usable. Its distinctive features include its large, spiny leaves and tall stature, which set it apart in any garden or natural setting.
Quick answers
What is Scotch Thistle?
Scotch Thistle (Onopordum acanthium) is a biennial forb or herb that can reach heights of 1.5 meters and is native to regions including Afghanistan, Albania, Algeria, Austria, Belarus, Belgium, and other parts of Europe and Central Asia.
Growingconditions · propagation · uses
VCultivation
Cultivation
Scotch Thistle thrives in light to medium and heavy soils with a pH of 7-7.5, preferring well-drained conditions but also tolerating moist environments. It requires full sun to partial shade and is hardy in temperate regions from zones 5-9. For cultivation, ensure the soil is not too dry; water regularly during dry spells. Propagate via seeds or division of established plants. Harvest edible parts such as flowers, leaves, and stems for culinary use.
Light
8/10
Water
Dry, Moist
Soil
Light (sandy), Medium, Heavy (clay)
Hardiness
5-9
Life cycle
Biennial
Habit
Forb/herb
Mature size
1.5 m tall
Soil pH
7–7.5
For first-time growers
How to grow Scotch Thistle for the first time
8steps
Start with Scotch Thistle as a simple, low-maintenance addition to your garden.
- 1
What you'll need
Seeds or young plants, a trowel, and a watering can.
- 2
Best time to plant
Plant in spring after the last frost or in early fall for better establishment.
- 3
Soil and container prep
Choose a well-draining soil with a pH between 7 and 7.5, and prepare by mixing in compost if needed.
- 4
Sowing or transplanting
Direct sow seeds 1 cm deep and 30-45 cm apart, or transplant young plants into the garden.
- 5
First two weeks
Water regularly to keep soil moist but not waterlogged. Monitor for pests and diseases.
- 6
Ongoing care
Provide consistent watering during dry spells and mulch around the base to retain moisture.
- 7
Harvest or pruning
Prune dead leaves and stems in late winter to maintain plant health, and harvest flowers for decorative purposes.
- 8
Common mistakes
Overwatering, planting too close together, neglecting to prune, and not providing enough sunlight.
VIEdible & utility
Edible & utility
Edible parts:FlowersLeavesStem
Edible uses: Oil, Colouring
Other uses:oiltextiles
Contextrange · companions · related
VIIDistribution
30 native · 0 introduced
Distribution
30 native · 0 introducedDistribution across3 continents· 30 native
Europe16 regions
native (16)AlbaniaAustriaBelarusBelgiumBulgariaDenmarkFranceGermanyGreeceHungaryItalyNorwayPortugalRomaniaRussiaUkraine
Asia5 regions
native (5)IranIraqKazakhstanPakistanSaudi Arabia
Africa1 region
native (1)Algeria
Broader regions
native:Altay, Baltic States, Czechoslovakia, Kirgizstan
IXSpecimen gallery
1 image
Specimen gallery
1 imageXI
Explore further
Companion planting
Growing zone
XII
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Back to the cataloguePlant id · 9c7211a0-6600-4516-be1b-e61672577b1d
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