Blue flowers, especially true primary blues, are highly valued in most gardens due to being rare. The genus Salvia includes some of the clearest and truest of blue blossoms. In his book, The Science of Plant Colors, Dr. David W. Lee notes that there is no true blue pigment in plants. According to Dr. Lee, biology professor emeritus at Florida International University, "Less than 10 percent of the 280,000 species of flowering plants produce blue flowers." Blues are derived from red pigments called anthocyanins that plants modify through shifts in their chemistry.
The Salvia genus contains some of the truest and clearest of blues. We grow only the best of the best.
(Elk Blue Little Sage) if it were up to us, we would never have named this plant Little Sage. Although it is dainty, it is also one of the most fascinating species we grow. We particularly love its pebbly, oval leaves that are a shiny purple/green on top and a furry white below.
(Nodding Sage) "Dancing in the air" is how garden writer Joseph Tychonievich describes the tall, graceful flower spikes of Nodding Sage, which can tower up to 5 feet tall over the plant's 18-inch-tall foliage during the summer flowering season.
(Blue Angel Gentian Sage) Since the 1838 discovery of this herbaceous species from Central Mexico, Salvia patens has been a mainstay of the perennial garden. Blue Angel is one of the smallest of the full-sized varieties.
(Cambridge Blue Gentian Sage) Cambridge Blue is one of the most famous varieties of Salvia patens, which was discovered in Central Mexico in 1838. Its powder blue flowers are delightful and cooling in the landscape.
(Dot's Delight Bicolor Gentian Sage) This sage turns heads, because its large, white and blue bicolored flowers make it a unique variety of Gentian Sage. Developed in the UK, Dot's Delight is less vigorous and less sun tolerant than other varieties of the species.
(Guanajuato Giant Gentian Sage) At 3 inches long, the flowers of this Gentian Sage are the largest of any we grow. Guanjuato Giant is also unique for its tall, upright growth and heavily textured foliage.
(Giant Gentian Sage) "Wow!" is what most people say when they see this large Gentian Sage from Central Mexico. Growing to 4 feet tall, it has long, graceful spikes of 3-inch deep, royal blue flowers that are highly visible and easily accessible to hummingbirds.
(Oxford Blue Gentian Sage) Only Salvia patens 'Blue Angel' comes close to the hard-to-believe, rich gentian blue of this sage from Mexico. Oxford Blue also grows taller and spreads wider than Blue Angel.
(Big Pitcher Sage) As its scientific name indicates, this sage has very large flowers. They are almost two-tone, changing from deep violet to a light blue or white at their base where they are cupped by dusky purple calyxes.
(The Queen's Sage) Regal spikes of lavender-to-purple flowers give weight to this sage's common name. It provides a stately show of bloom during summer in USDA Zones 6 to 10. Cold hardy and heat tolerant, this impressive perennial comes from the mountains of Turkey.
(Autumn Sapphire West Texas Grass Sage) Butterflies and honeybees particularly favor this West Texas mountain native. In contrast to the true blue flowers of regular Salvia reptans, this cultivar has deep blue blossoms and is remarkably compact.
(Bolivian Lace Leaf Sage) A large decidious woody shrub, this is a distinctive and somewhat unique Salvia species. The large clusters of deep blue flowers appear in the spring and again in the fall. A native from a tropical savanna climate in Bolivia, this species grows best in climates with year-round warmth.
(Confused Argentine Sage) Similar in many ways to the indispensable garden favorites of the Anise Scented Sage (Salvia guaranitica spp.) group, this plant is a perfect companion for its better known cousin.
(River Sage) Native to partially shaded streamsides in Argentina and Bolivia, this is one of the few Salvia species that can tolerate wet soil. It makes a fine filler plant in a group of other partial shade growers, its wirey thin stems sending up floral displays here and there, much to the gardener's delight.
(Hybrid River Sage) This beautiful new plant is a FBTS hybrid between to rare South American species. In growth and flower it is intermediate between the parents, and fast growing because of it's hybrid vigor.
(Arrowleaf Sage) Brilliant royal blue flowers and unusual foliage attract the eye to Arrowleaf Sage. This large herbaceous perennial is found at elevations up to 10,500 feet in the Cordillera de los Andes of Chile, Ecuador and Peru.
(Xobo Valley Sage) Although petite, the rare Xobo Valley Sage is eyecatching due to its lacy, bright green foliage and powder blue flowers. It's even possible that this long-blooming sage may have caught Nelson Mandela's eye as he grew up in the Wild Coast area of South Africa's Eastern Cape.
(Scordy Sage) Little is known about this shrubby Ecuadorian native. We're not even sure it is from Ecuador! However, this is another sage that sells itself instantly when seen in bloom. The large clusters of rich, deep violet flowers bloom summer to fall, attracting honeybees and hummingbirds.