Agastache foeniculum
Common name(s): anise hyssop, blue giant hyssop
Description: perennial; upright and clump-forming with aromatic green leaves and lavender-purple flower spikes from summer into autumn. Seeds can be added to desserts such as muffins or cookies and leaves are often used to flavor jellies.
Height: to 5 ft. Spread: to 2 ft.
Position: full sun to partial shade and well-draining soil
Uses: medicinal, culinary (herbal tea, jelly, baked goods), to attract pollinators
Distribution: Canada and North Central USA
Care: no special care needed, however, pruning old, woody stems to 6 inches above the ground once a year in spring will generally result in a more attractive plant