Canada's Plant Hardiness Site

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Choose a species from the list below.

Email us if the plant you wish to report is not listed on the site, or to report any nomenclature errors.

family: Asteraceae

Centaurea benedicta blessed thistle,St. Benedict's thistle,our Lady's thistle
Centaurea calcitrapa purple starthistle,red starthistle,bighead purple starthistle
Centaurea cyanus bachelor's button,garden cornflower,bluebottle,thimbles,witch's bells
Centaurea diffusa diffuse knapweed,white knapweed,tumble knapweed
Centaurea jacea brown knapweed,brown-ray knapweed,meadow knapweed
Centaurea macrocephala globe knapweed,globe centaurea,golden knapweed,bighead knapweed,bighead starthistle,yellow bachelor's button,yellow cornflower,Armenian basket flower,yellow hardhead
Centaurea melitensis Maltese starthistle,Maltese knapweed,tocalote,Maltese centaury,Napa thistle
Centaurea montana mountain cornflower,mountain bluet,mountain starthistle,perennial cornflower,montane knapweed
Centaurea nigra black knapweed,horse-knops,Spanish buttons,lesser knapweed
Centaurea nigrescens Tyrol knapweed,shortfringe knapweed,shortfringe starthistle,Vochin knapweed,blackish knapweed
Centaurea scabiosa scabious knapweed,hardheads,greater centaury,greater knapweed
Centaurea solstitialis yellow starthistle,Barnaby's starthistle,St. Barnaby's thistle
Centaurea stoebe spotted knapweed
Centaurea stoebe subsp. micranthos spotted knapweed
Centaurea ×moncktonii protean knapweed,meadow knapweed
Centaurea ×psammogena diffuse-spotted hybrid knapweed

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