Centaurea nigra (Lesser Knapweed, Common or Black Knapweed)
Michael's Opinion
A common wildflower often found growing in open, dry grassland or meadow areas.
Botanical Information
| Family | Asteraceae |
| Genus | Centaurea |
| Species | nigra |
| Category | Wildflowers & Weeds |
Details
| USDA Hardiness Ref. | |
| Canada Hardiness Ref. | |
| RHS Hardiness Ref. | |
| Growth | Medium |
| Flowering Period | August, September, October |
Description and Growing Information
Photographs
Scanning electron microscope images of pollen grain.