Black & Blue anise sage (Salvia guaranitica) certainly lives up to its more common name: hummingbird sage. Hardy in zones 7-10 and to up to four feet tall and wide once fully grown, this attractive salvia thrives in full sun and is drought tolerant once established.

Its beautiful cobalt flowers are likely good to the last drop, but this female hummingbird decided to move on to the showy Blue Chiffon® Rose of Sharon (Hibiscus syriacus) as a chaser.

Unusual lavender-blue flowers for the late summer garden and hardy in zones 5-9, this gorgeous sun-loving shrub can tower up to 12 feet tall by six feet wide. Long-blooming and also attractive to bees and butterflies, it grows in any soil unless it is either extremely wet or dry.