Blue giant hyssop

Perennial native to central North America. The species was introduced to Québec. Its purplish blue flowers attract butterflies and pollinators at the end of summer. The foliage smells of anise. The plant is highly drought-tolerant.

Height: 75 to 125 cm
Width: 40 cm 
Flowering: purplish blue, July to September
Attractions for wildlife: attracts pollinators and butterflies