This is a mint of upland prairies and open woodlands. It sports narrow, terminal spikes of blue flowers that attract a wide range of insects. The triangular leaves are green above and nearly white below. Plants have a sweet black licorice scent and flavour and make wonderful tea and medicine. Giant hyssop is often associated with wild bergamot, bur oak, and prairie clusters of hazelnuts. It can tolerate dry conditions.
Flower Colour: blue
Sun Exposure: full sun to part shade
Bloom Period: July – August
Height: 1.5 – 3 ft
Soil: dry to moist