(Blue Vine Sage) Blooming from mid-summer through late autumn, this semi-hardy herbaceous perennial is adorned with a profusion of true-blue flowers that arch up 12 to 24 inches above its deltoid, grass-green leaves.
In our mild coastal climate Blue Vine Sage blooms for 8 to 10 months and has become a patch of dazzling blue -- nearly 4 feet tall and 3 feet wide -- in our Salvia garden. It is a fine choice for edging pathways or including in perennial borders. Although it doesn't need lots of water, it tolerates moist ground. For best performance, this plant needs weekly watering, removal of spent flowers and high shade in hot areas. After the threat of frost passes in spring, cut the stems almost down to the ground to keep your patch shapely.
Salvias and their companion plants pop with color. Sweep your eyes from top to the bottom here for an impression of this plant's color combinations. The first row displays blossoms from primary to less dominant shades and includes any contrasting throat color. The second tier is the main hue of leaf-like bracts or calyxes supporting the flowers. Foliage (one or two colors) leafs out in the bottom row.
Primary color - Vivid Purplish Blue - RHS# 96A
Throat color - Strong Purplish Blue - RHS# 96C
Primary color - Vivid Purplish Blue - RHS# 96A
Bract color - Strong Yellowish Green
RHS# 144B
Leaf color - Moderate Olive Green
RHS# 146A
Learn more about how we analyze plant colors About our Color Display
We based our analysis of this plant’s floral and foliar color on the internationally standardized color system published by the U.K.’s Royal Horticultural Society. Called the RHS Large Colour Charts, this publication is a boxed set of color swatches arranged in fans and containing all the colors that RHS has identified in horticulture. RHS gives each color a common name and code number.
Each swatch has a small hole punched into it. We place the swatch over a flower petal and compare the blossom’s color to that of the card. When using RHS colors to compare plants that you want to combine in a flowerbed, in bouquets or in some other manner, RHS says to view them indoors in north light. If you are matching our digital swatches to flowers already in your garden, pluck two or three fully open blossoms of each plant that requires analysis.
You may find that the plant you receive from FBTS varies somewhat in color from what appears in our color analysis or our photograph due to a number of factors, including:
- Variations in photographic colors based on lighting level at different times of day
- Differences in the resolution of digital screens
- Seasonal changes in plant color due to changes in temperature and plant cycle and
- pH or soil chemistry that varies from one locale to another and causes color shifts.
Finally, RHS notes that you shouldn’t attempt color matching when your eyes are fatigued.
Here are some guidelines for success with this plant in your garden.
Click on an individual icon for more detailed information.
Exposure
Full Sun
This plant needs or tolerates more than six hours of intense sunlight daily. Many Salvias only thrive in wide-open locations where they receive long hours of full sun. However, full-sun species sometimes tolerate a bit of partial shade. Or a Salvia that loves partial shade may be amenable to spending part of its time in full sun.
In general, this sun/shade adaptability shows up in Salvias that do best in cooler climates when grown in full sun and thrive in hot climates when partial shade is available. So full-sun Salvias sometimes are also categorized as partial-shade plants and vice versa.
Full sun
Partial Shade
This plant grows well in partial shade, such as the kind on the edge of woodlands or under deciduous trees with breaks in the foliage through which dappled sunlight penetrates. Many Salvias thrive in partial shade, including ones that spend part of their day in full sunlight. Some species need partial shade to overcome severe heat and dry soil.
Partial shade
Garden Uses
Containers
This plant grows well in an outdoor container, such as on a patio.
Some containerized Salvias leaf out and flower year after year following a period of dormancy. Annuals in containers may die back and appear to grow again when they reseed.
During extreme heat, check the soil in container plantings once or twice daily to be sure it doesn't completely dry out. Feel its surface for coolness, then gently poke a finger into the soil to check for dryness.
Container plant
Growing Habit
Zone(s) 8 - 11
Plant hardiness Zones defined by the U.S. Department of Agriculture tell you the minimum temperatures a plant can withstand in your garden. The USDA divides the nation into winter climate areas from coldest (Zone 1) to warmest (Zone 11).
However, it is sometimes possible to grow a Zone 6 Salvia as a perennial in Zone 5 if you provide preferential care, such as winter mulching and a location sheltered from harsh winds. In contrast, a Zone 9 Salvia may act like a perennial in Zone 10 if given a bit of shade or extra water.
8 - 11
36 inches tall
To create a harmonious landscape plan, it is important to consider the heights of individual plants.
Height also affects function. Short Salvias often make excellent ground covers that conserve soil moisture and discourage weeds while also brightening your yard. Medium-height Salvias, such as ones 36 inches tall, often are ideal border plants. A tall Salvia planted singly can highlight a landscape; multiple plantings can form an attractive screen.
36 inches tall
42 inches wide
By considering the width of a plant, you can determine how many to place in a row or what other plants to grow with it.
For example, a narrow, moderate-height Salvia may look good interplanted with bushier species, kind of like Mutt and Jeff.
In contrast, wide-spreading Salvias are economical for hiding lengths of wall and fence or for creating hedge-like divisions in a yard.
42 inches wide
Ground Cover
Try this plant to control weeds, limit erosion, conserve soil moisture and add color to your landscape.
From short perennials that form dense mats spread by underground stoloniferous roots to thickets of medium-size shrubs, many Salvias are efficient ground covers.
Ground cover
Perennial
Plant this herbaceous species in the USDA Zones where it grows as a perennial, returning year after year.
After dying back to the ground at frost, herbaceous perennials emerge in the Spring with soft, new growth. A Salvia that is perennial in one region, may be an annual in another depending on local conditions, such as winter temperatures.
If you live in USDA Zone 5, for example, Salvias in our catalog cited as growing well in Zone 5 or lower will be perennial. Those cited as doing well in Zones 6 or higher may do well in Zone 5, but generally will act like annuals coming back from seed instead of the parent plant’s roots.
Perennial
Water Needs
Average
This plant needs regular watering based on what is appropriate to your local conditions.
In some extremely hot, arid climates, this may mean daily watering in Summer. Although many drought-resistant Salvias survive on little to no watering due to local rainfall and deep roots meeting their moisture needs, others need regular doses. The size and frequency of the dose depends on your climate.
Average water
Water Loving
This plant thrives on or at least tolerates lots of water, especially when soil is well drained. They are generally not suitable for poorly drained soils.
A number of Salvias hold up well in areas where rainfall is a regular occurrence. Some even tolerate boggy conditions but only for a brief time. These are usually top-notch plants for regions of the country, such as the Southeast, where summers are soggy.
Water loving
Blooming Season
Fall
This plant reaches peak bloom in Fall or flowers for much of the season.
It may begin flowering much earlier in the year. Bloom time for some Salvias lasts from Spring till first frost. Others begin flowering in Summer and continue into Fall. There are also Salvias that don’t bloom until late Fall and continue into Winter if grown in mild-Winter areas.
There is a great deal of overlap in blooming seasons for Salvias.
Fall
Summer
This plant reaches peak bloom in Summer or flowers for much of the season.
Lots of Summer bloomers start flowering in Spring; others begin in Summer and keep up the show of color until frost.
There is a great deal of overlap in blooming seasons for Salvias.
Summer
Wildlife
Honeybees
Honeybees love this plant’s nectar. As a honeybee burrows down into a Salvia’s nectar-rich flowers to reach dinner, it accidentally gathers pollen and drops it on the stigma of that blossom or of ones on other nearby Salvias. Fertilization results in seed production.
By growing honeybee favorites, you attract these helpful pollinators to all your flowering plants and increase productivity
Honeybees
Butterflies
This plant attracts butterflies whether for nectar or as a host for their caterpillars. Some butterflies feed on a limited range of flowering plants and only lay eggs on one kind of host plant. Salvia nectar lures adult butterflies. Placing host plants, such as Milkweeds (Asclepias spp.), next to nectar plants builds butterfly habitat. In exchange, the butterflies improve fertility in your garden through pollination.
Butterflies
Deer
Unless local forage is in short supply, most deer likely will avoid this plant.
It appears that deer dislike Salvias, in general, due to their volatile oils that make the plants so fragrant and savory in cooking. However, the only completely deer-proof plants are the ones grown beyond reach.
Deer resistant
Hummingbirds
Based on our experience and reports from customers, hummingbirds (Trochilidae spp.) love this plant.
Hummingbirds exist only in the Americas where their 300-plus species are particularly fond of the nectar in brightly colored Salvias from the Western Hemisphere. However, if favorites aren’t available, they dine on the nectar of most Salvias.
Hummingbirds repay thoughtful plantings by helping to pollinate your garden
Hummingbirds
Pantone Pageant: Shady Salvias on a Mixed Blue Designer Patio
Posted: Saturday, March 16, 2013 Synopsis: Got shade? Go ahead and get blue about it in the garden. We'll hold your hand, listen to your concerns and help you pick just the right shady salvias in hues to match the 2013 designer colors Dusk Blue and Monaco Blue from Pantone.
Read the Article Pantone Pageant: Emerald Designer Salvias
Posted: Wednesday, January 2, 2013 Synopsis: Emerald and other cool shades of green are among the hot colors for 2013, according to Pantone, a design-industry leader. Flowers by the Sea doesn't generally think of greens or of any colors in nature as being in or out. However, we think it is fun and fresh to consider garden design from a different perspective. Emerald is Pantone's top color for the year. This article about emerald-colored Salvias begins a pageant of sorts down the runway of our blog, showing how the Pantone color matching system can be used to shape landscaping decisions.
Read the Article Salvias Down South: 15 Thirsty Salvias for Florida
Posted: Monday, January 21, 2013 Synopsis: Flowers by the Sea grows Salvias that are already popular in the Southeast as well as others we would like to introduce to gardeners seeking thirsty flowering plants that can also adjust to dry spells. Many are fine choices for Florida hummingbird gardens. Our suggestions are organized into categories based on moisture tolerance – average and ample -- as well as sun requirements.
Read the Article Posted: Saturday, May 25, 2013 Synopsis: Most gardeners associate plants in the genus Salvia with full sun, rocky soil, drought and semi-arid native lands. Although a number of sages fit this picture, far more appreciate loamy, fertile garden soil. Some require lots of water. Also, a large number of sages thrive in partial shade, and some tolerate full shade. Here are six of the many shade lovers that Flowers by the Sea grows.
Read the Article Portraits in Gardening: Michael Kampf
Posted: Monday, July 14, 2014 Synopsis: Portraits in Gardening is a new blog series from Flowers by the Sea that profiles customers who are passionate about the Salvia genus. This post features Illinois gardener Michael Kampf who has succeeded in growing many kinds of Salvias despite the frigid winters and fiercely hot summers of the Chicago area. He began gardening when 6 years old with encouragement from his mother and fell in love with Salvias at age 12.
Read the Article Fall Planting is Superior for Salvias
Posted: Thursday, August 9, 2012 Synopsis: Fall is the best time to plant many Salvias. Read on to find out why . . .
This picture, "Autumn", was painted by Giuseppe Arcimboldo in 1573.
Read the Article Salvias Down South: Salvia Success in Florida
Posted: Wednesday, December 26, 2012 Synopsis: Florida is one of the wettest states in the nation, yet it is a fine place to grow Salvias if you select shade-tolerant, moisture-loving species and ones native to Florida. Gardeners who are accustomed to growing Salvias in a dry climate face a variety of surprises in Florida gardens. These include recurrent periods of drought, many cloudy days and soil that is so poor it has to be amended for Salvias.
Read the Article True Blue Salvias You Can Rely On for Garden Serenity
Posted: Thursday, March 26, 2015 Synopsis: Forget all the mournful music telling you that blue is the color of sadness. In a Salvia garden filled with hot colors, true blue is a peacemaker -- a reliable harmonizer that commands peace in the garden. This article talks a tiny bit about football, Madonna and the chemistry of true blue flowers. Then it offers a lot of true blue sages for gardens coast to coast from our Flowers by the Sea Online Nursery catalog.
Read the Article Portraits in Gardening: Michael and Kathi Rock's Hummingbird Journey
Posted: Wednesday, November 26, 2014 Synopsis: A wedding gift led to Kathi Johnson Rock and Michael Rock's passion for hummingbirds. These Wisconsin birders offer tips and plant suggestions for hummingbird gardeners at FBTS. Although now known as Madison's "Hummingbird People," the Rocks aren't ornithologists or biologists. They are home gardeners and customers of Flowers by the Sea. This article includes a list of favorite hummingbird plants found in the Rocks' gardens.
Read the Article