Hieracium umbellatum (Narrowleaf Hawkweed)
Botanical Information
| Family | Asteraceae |
| Genus | Hieracium |
| Species | umbellatum |
| Category | Perennials, Wildflowers & Weeds |
| Origin | Europe, Central and Northern Asia and North America. |
Details
| USDA Hardiness Zone | 6 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 5 - 6a |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H7 - H6 |
| RHS Hardiness Ref. | |
| Temperature (°C) | -23 - (-18) |
| Temperature (°F) | -10 - 0 |
| Height | 10 - 150 cm |
| Growth | Fast |
| Flowering Period | July, August, September |
Description and Growing Information
| Propagation | Propagate by seed or by division. |
| Cultivation | Grow in sun, can tolerate a variety of soil fertility ranges. |
Photographs
Scanning electron microscope image of pollen grain.