This is a description of sprawling perennial salvia that freezes during winter. It grows large and produces spikes of deep purple blooms that thrive in the hottest months. These blooms attract hummingbirds and butterflies.

The indigo spires can be trimmed by a third during warm weather to encourage fresh blooms. Deadheading the flower stalks is also recommended to keep the plant blooming throughout the summer. The sage is believed to have originated as a garden hybrid between mealy blue sage (Salvia farinacea) and Salvia longispicata. During winter, it's best to cut back the foliage after freeze damage.