'Blackthorn' a herbaceous perennial to 4 feet. The leaves have oval leaflets with jagged edges and the rose pink, bottlebrush flowers are carried on thin upright stems from late summer to mid-autumn
- Type: Perennial
- Zone: 3-8
- Height: 2-4 feet
- Spread: 1-2 feet
- Sun: Full to Part Sun
- Flower color: Maroon-Purple
- Foliage Color: Green
- Attracts: Butterflies
- Tolerates: Deer, Rabbit