24" x 15" wide (seed propagated) Originally collected in Korea by Heronswood Nursery owner Dan Hinkley, this beauty is proving itself to be an excellent performer in the U.S. The deep violet-blue flowers keep coming all summer when kept deadheaded to prevent seed set. The foliage is a deep, glossy green with a hint of purple to the undersides. The entire plant is intensely mint scented! Unlike the southwestern Agastaches, Korean Hyssop will do well outside of the western U.S. in the wetter winter climates of the Midwest and East. Zones 5-9. Interested in Hummingbirds? Visit the Hummingbird Society. Pot size 5' deep premium.