Collin County Chapter

Azure Sage (Salvia azurea)

Fall-blooming perennial

Description:

Azure Sage, Salvia azurea, also called Sky Blue Sage, Blue Sage, and Pitcher Sage, is a prairie plant from the mint family, native to the grasslands of the Great Plains. In landscapes, it is equally at home in a cottage garden, a rock garden, meadow garden, or grown as a focal specimen plant. It usually grows 1-4.5 feet tall and 1-3 feet wide with smooth-edged to serrated, narrow pointed green leaves whorled around the stems. Plus, Azure Sage is very cold tolerant and will over-winter as a rosette.

Flowers and Seeds:

As its name implies, Azure Sage has sky blue to light blue to (rarely) white flowers appearing in late summer and early fall. The flowers are two-lipped bell-shaped calyxes 1/4 to 1/2 inch long. After pollination, seeds form, which can be collected in mid- to late-fall. As a bonus, Azure Sage is easy to propagate from seed, which may be sown in the fall as well as the spring.

Planting sites:

Azure Sage does well in full sun to partial shade. It tolerates a range of soil pH and soil types, including poor soil, but it does not do well in clay.

Watering Instructions:

Because of its native prairie habitat, Azure Sage’s roots are large, tough, and deep so that it can compete with prairie grasses. In the wild, its roots are normally shaded so Azure Sage may need irrigation during a dry spell to establish it in a well-weeded flower bed. Among tall grasses, Sky Blue Sage requires no supplemental water as a young plant. Once established, it may need watering only in an extended drought. It must have adequate drainage.

Comments:

Azure Sage is an excellent choice for low-maintenance landscaping in North Texas. It usually blooms the first year that it is planted. In the garden, it may be desirable to cut plants back to half their size in mid-summer, so that they become bushier with more blooms. Additionally, the nectar from Azure Sage’s flowers attracts butterflies and bees; indeed, it is recognized for its value to native bees. Azure Sage looks terrific when it is inter-planted with Maximilian Sunflower’s bright yellow blooms and various red-flowering sages. Other companion plants include Mexican Feather Grass, Lindheimer’s Muhly, Gulf Muhly, and Fragrant White Mistflower.

Lastly, look for the NICE! Plant of the Season signs and information sheets on your next visit to a participating North Texas nursery.  Thank you for using native plants in your landscapes. Information courtesy of Trinity Forks Chapter of the Native Plant Society of Texas.

About the Region

2026 Fall Symposium Logo

This low-elevations region of Texas extends inland from the barrier islands, about 60 or so miles, and stretches from Brownsville to Louisiana. In total, it covers about 9.5 million acres, with a high point of 150 feet in elevation. More than 1000 species of plants can be found in this region. On the southern end, species more common in Mexico (such as Sabal mexicana) and Central America occur.

The barrier islands provide us with dune systems, and clay flats to the inland side, which have species found in these areas alone. Many plants here, such as Ipomoea pes-caprae (beach morning glory), can be found throughout tropical regions of the globe. I’ve encountered the same species on the beaches of Guam.

Once inland, vast marshes and wet prairies occur. Occasionally, oak (Quercus fusiformis) groves can be found. Common grasses include species of Bothriochloa, Paspalum, and Sporobolus; eastern gamagrass (Tripsacum dactyloides); and switchgrass (Panicum species). Many rivers and creeks cut through the Gulf Prairies, and along these riparian areas various species of trees, Sabal minor, and other plants adapted to clay soils can be found. Due to overgrazing, farming, and fire suppression, woody species such as mesquite (Prosopis glandulosa) and huisache (Acacia farnesiana), and invasive species such as chinaberry (Melia azedarach), Brazilian pepper (Schinus terebinthifolius), and Chinese tallow (Sapium sebiferum) have increased and displaced our native flora.

Source: Wildflowers of Texas by Michael Eason