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When designing a cottage or pollinator garden, height and bloom time are key factors. Some plants are too tall, while others bloom out of time with the rest. Blue sage is a great choice for these gardens, with its middling height and extra-long bloom period. At three to five feet tall, it fills gaps between coneflowers and butterfly weed while contrasting bright warm colors with its cool blue blooms. Bees and butterflies can find flowers on Salvia azurea throughout summer and well into fall. When the flowering window finally ends, keep a foot or two of the stem when cutting back to provide nesting space for native bees. Blue sage is just as tough as it is beautiful. It tolerates drought, rocky or sandy soils, partial shade, and hungry deer. It is native to most central and southern states, but its range extends as far north as Minnesota, so it is hardy to zone 5. Enjoy the display of Salvia azurea in front of the Visitor Center next time you visit the U.S. National Arboretum.
Kamala Codrington-White, an Agricultural Science Research Technician at the National Arboretum, shares plants of note at the Arboretum in this recurring segment. Find these plants on your next trip to the Arboretum. Photos by the National Arboretum.
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