Agastache foeniculum 'Golden Jubilee'  1 to 3 feet. AAS Winner for 2003. Foliage turns from bright chartreuse in the spring to lime green in the summer. The blue-lavender flowers grow in masses of clusters. This aromatic mint attracts butterflies and hummingbirds and has an exceptionally long flowering period, extending from mid to late summer. If the flowers are dead-headed before they go to seed they can bloom into October. Heat and drought tolerant. USDA hardiness zones: 5 to 9