| Scientific Name: | Juncus ensifolius |
| Common Name: | dagger-leaved rush, swordleaf rush |
| Family Name: | Juncaceae |
| Origin: | Mexico, North America |
| Hardiness Zone: | Zone 3: (-40 to -34 °C) |
| Plant Type: | Herbaceous perennial, Poales (grass-like) |
| Mature Size: | 0.4 - 0.7m x 0.1 - 0.3m (height x width) |
| Habit: | Upright |
| Form: | Vase |
| Texture: | Medium - fine |
| Landscape Uses: | Perennial border, Small garden/space, Wetland - bogs |
| Exposure: | Full sun only if soil kept moist, Part sun/part shade |
| Soil or Media: | Bog |
| Leaves: | Simple, Grass-like, Basal, Parallel venation, Glabrous, Linear, Entire |
| Flowers: | Flowers clustered, Green, Pink, Dark-red, May-Jun |
| Fruit: | Capsule, Brown, Black, Jul-Aug |
| Key ID Features: | |
| Rhizomes long, stems erect, 30-60cm tall; leaves on the lower half of the stem, blades strongly flattened (iris-like), 15-45cm long x 2-8mm wide, sheaths open; flowers 3-4mm long, in dark, terminal, globular, spiky, clusters. | |