Agastache Foeniculum / Blue Giant Hyssop

Blue giant hyssop is a strongly aromatic, drought-tolerant, erect perennial native throughout the northern United States and Canada. This member of the mint family has downy, medium green, licorice-scented leaves that appear on long stems topped with spikes of blue-purple flowers that appear from midsummer to autumn.

Highly attractive to bees and butterflies, this plant will continue blooming if deadheaded. The fuzzy leaves that release the licorice aroma tend to dissuade browsing damage from deer.

Blue giant hyssop is tolerant of poor soils and an excellent choice for sunny mixed borders and informal wildflower gardens. (info source: Learn2Grow.com)
Although the plant is ornamental,

It has a number of practical uses. Add the leaves to salads or meat dishes, or blend the blooms into fresh bread. Anise hyssop tea, which tastes similar to licorice, can be used to treat colds, coughs, and fevers.

Genus - Agastache
Species - Foeniculum
Common name - Blue Giant Hyssop
Other names - Anise Hyssop
Pre-Treatment - Not-required
Hardiness zones - 4 - 9
Height - 2-3' / 0,60 - 1 m
Spread - 12-28" / 0,30 - 0,70 m
Plant type - Perennial
Vegetation type - Deciduous
Exposure - Full Sun, Partial Sun
Growth rate - Fast
Soil PH - Neutral
Soil type - Clay, Loam, Sand, well-drained
Water requirements - Average Water
Landscape uses - Although the plant is ornamental, it has a number of practical uses.
Leaf / Flower color - Green / Blue, Purple, Blue Violet
Plant growth rate - Fast