Onopordum acanthium
SCOTCH THISTLE, COTTON THISTLE
Asteraceae

 
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Plant type: herbaceous biennial

Hardiness zones: 9-10

Sunlight: hot overhead sun to warm low sun

Soil Moisture: dry between watering to constantly moist

Soil: ordinary soil, enriched soil, mildly acidic to mildly alkaline

Tolerances: light frost
3m
Plant habit
 
1m

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Pruning: Dead-head after flowering to prevent seeding.

 
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Onopordum acanthium
SCOTCH THISTLE, COTTON THISTLE
Asteraceae

 

  Plant type: herbaceous biennial

Hardiness zones: 9-10

Sunlight: hot overhead sun to warm low sun

Soil Moisture: dry between watering to constantly moist

Soil: ordinary soil, enriched soil, mildly acidic to mildly alkaline

Tolerances: light frost
3m
Plant habit
 
1m

FEATURES

Flowers: purple or white

Flowering Time: early summer to late summer

Leaves: grey-green

Bark & Stems: spiny leaves


DESIGN

Garden Styles: suits dry style & cottage designs

Uses: barrier, accents, border

Growth rate: fast

Maintenance Level: average

Skill Level: average



HAZARDS

Weed Potential: yes






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