wild bergamot
Monarda fistulosa

Hardiness: Zones 3 to 9
Plant type: Herbaceous perennial
Height: 2- 4'
Spread: 2- 3'
Sun: Full sun to part shade
Water: Medium 
Bloom time: July to September
Bloom color: Pale purple
Soil: Well draining, garden soil, do not let dry out during summer, compost amendment beneficial

Notes: Prone to powdery mildew, avoid overhead watering to minimize this issue.

More information on this plant here.