Onopordum acanthium (Cottonthistle)


Botanical Information

FamilyAsteraceae
GenusOnopordum
Speciesacanthium
CategoryPerennials
OriginNative to Europe and Western Asia.

Details

USDA Hardiness Ref.
Canada Hardiness Ref.
RHS Hardiness Ref.
Height1.5 m
Spread1 m
GrowthFast
Flowering PeriodJuly

Description and Growing Information

Notable SpecimensThe A. M. Cuddy Gardens, Strathroy, Ontario, Canada.
HabitatGrows best in sandy, sandy clay and calcareous soils which are rich in ammonium salts.

Photographs