Equisetum hyemale var. affine (Scouring Rush, Rough Horsetail)
Botanical Information
| Family | Equisetaceae |
| Genus | Equisetum |
| Species | hyemale |
| Variety | affine |
| Category | Perennials |
| Origin | Genus name from the Latin word for horse, 'equus' and 'saeta', meaning bristle or hair. |
Details
| USDA Hardiness Zone | 5 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 4a - 6a |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H7 |
| RHS Hardiness Ref. | |
| Temperature (°C) | -29 - (-23) |
| Temperature (°F) | -20 - (-10) |
| Growth | Medium |
Description and Growing Information
| Notable Specimens | RHS Garden Rosemoor, North Devon, England. |