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Stemless Thistle

Onopordumacaulon

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Family

Asteraceae (ass-ter-AY-see-ee)

Info

Genus

Onopordum (on-OH-por-dum)

Info

Species

acaulon (a-KAW-lon)

Info

Synonym

Sun Exposure

Full Sun

Sun to Partial Shade

Foliage

Herbaceous

Height

under 6 in. (15 cm)

6-12 in. (15-30 cm)

Spacing

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

Hardiness

USDA Zone 8a: to -12.2 °C (10 °F)

USDA Zone 8b: to -9.4 °C (15 °F)

USDA Zone 9a: to -6.6 °C (20 °F)

USDA Zone 9b: to -3.8 °C (25 °F)

USDA Zone 10a: to -1.1 °C (30 °F)

USDA Zone 10b: to 1.7 °C (35 °F)

Danger

Plant has spines or sharp edges; use extreme caution when handling

Bloom Color

Cream/Tan

Bloom Time

Late Spring/Early Summer

Other Details

Gardener's Notes:

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positive

neutral

negative

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Stemless Thistle

Onopordumacaulon

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