| Diffuse Knapweed | |
| Barnaby | |
| White Knapweed | |
| Sparse Knapweed |
| Plant Habit: | Vine |
| Life cycle: | Perennial |
| Sun Requirements: | Full Sun Full Sun to Partial Shade Partial Shade to Full Shade |
| Water Preferences: | Wet Dry |
| Minimum cold hardiness: | Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F) |
| Maximum recommended zone: | Zone 4a |
| Flower Color: | Red Yellow |
| Flower Size: | 1"-2" |
| Flower Time: | Late summer or early fall Year Round |
| Underground structures: | Rhizome |
| Wildlife Attractant: | Hummingbirds |
| Resistances: | Flood Resistant |
| Miscellaneous: | Carnivorous |
| Conservation status: | Endangered (EN) |
