Rosie Posie’ bears loads of hot pink flowers atop aromatic, bright green foliage that grows into a densely compact, ball-shaped clump, much more refined looking than older cultivars. Agastache are well-adapted to thrive in dry soils and is right at home in rock gardens where it will attract hummingbirds, butterflies, and honeybees. This is one of the easiest perennials to grow.