| Scientific Name: | Spiraea douglasii |
| Common Name: | hardhack, western spirea |
| Family Name: | Rosaceae |
| Origin: | B.C. east of Cascades, B.C. west of Cascades, Canada - northern, U.S. - northwest, U.S. - southwest |
| Hardiness Zone: | Zone 5: (-29 to -23 °C) |
| Plant Type: | Shrub - deciduous |
| Mature Size: | 1.3 - 2.0m x 2 - 3m (height x width) |
| Habit: | Stiffly upright, Twiggy |
| Form: | Oval - vertical |
| Texture: | Medium |
| Landscape Uses: | Erosion control, Summer interest, Waterside planting, Wildlife food, Woodland margin |
| Exposure: | Full sun |
| Soil or Media: | Acidic, Bog |
| Leaves: | Simple, Alternate, Soft flexible, Pinnate venation, Glabrous, Oblong, Dentate |
| Flowers: | Cyme, Purple, Pink, Jun-Jul |
| Fruit: | Aggregate fruit, Follicle, Brown, Sep-Oct, (Persistent) |
| Key ID Features: | |
| Branches woolly, reddish-brown; leaves alternate, narrowly oblong, most blades 4-8cm long x 1-3.5cm wide, grey tomentose underside, toothed mid-blade to apex, petioles 3-7mm long; panicles densely packed with purple-pink flowers ~5mm wide with long stamens, Jun-Jul. Winter ID: twigs reddish-brown, round with tiny ridges; buds globular, 1-2 mm long, leaf scar v-shaped, about 1mm wide; persistent fruit. | |