Blue sage is a delicate, herbaceous perennial wildflower in the mint family (Lamiaceae) native to the South and Central United States. The species epithet is Latin for “sky blue” and refers to the sky-blue color of the showy flowers. Plant blue sage in full sun to partial shade in sandy or shallow-rocky soil. It prefers moist soil as long as there is good drainage but tolerates occasional drought. Flowers appear from mid-summer to fall for long-lasting interest in the garden. Cut the stems back by half in the late spring to promote fuller, more compact growth, as stems can flop over with the weight of the flower spikes. Floppiness is especially prevalent in organically rich soils. This plant is resistant to browsing by deer. Propagate it by division or seed. Blue sage grows 3 to 5 feet tall and has showy blue flowers that attract bees and butterflies. It is not difficult to grow but is surprisingly scarce in the horticulture trade. Seek it from specialist nurseries, or beg a cutting from a friend. Native bees nest in the dead, hollow stems, so gardeners are encouraged to cut back dead stems to 12 to 24 inches and allow them to remain standing until they disintegrate on their own. Read more about best practices for stem-nesting bees in this NC Extension publication . Blue sage is perfect for pollinator gardens. This native works well in the middle of perennial borders, prairie gardens, native gardens and open meadows. It is also at home tucked into a rock or cottage garden. Insects, Diseases, and Other Plant Problems: No significant problems. VIDEO Created by Elisabeth Meyer for "Annuals, Perennials, Vines, and Groundcovers," a plant identification course developed in partnership with Longwood Gardens. More information on Salvia .
Curated pairwise relationships between this plant and others in the library — who feeds
whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.
No curated interactions recorded for this species yet.
Also noted by NC State
Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell
apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.