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Salvia is a large family of plants that is very important to the
xeriscape landscape. Salvia greggii comes with salmon, red, pink,
and white blooms. Indigo spires, Mexican bush sage, and mealy blue
sage are blue-flowered salvias. Most salvias prefer full sun where
they produce blooms all summer and into the fall without being bothered
by insects, disease, deer, or drought. Salvias are a favorite food
for hummingbirds and butterflies.
Salvias bring color to the garden from spring until the first
hard frost. They are indispensable for gardeners who want pretty,
bright, long-lasting flowers to enjoy in the garden and in arrangements.
The most readily available salvia sold as bedding plants at garden
centers and nurseries is Salvia splendens. However, Texans are
best served by the tender-to tough perennial salvia species such
as mealy blue sage (S. farinacea), scarlet or red Texas sage (
S. coccinea), autumn or cherry sage (S. greggi), and Mexican bush
sage (S. leucantha).
The genus Salvia contains at least 900 species and, because
they readily cross pollinate, innumerable hybrids - both natural
and manmade. Salvia ?ndigo Spires? is a good example of a hybrid
resulting from cross-pollination. Salvias are found on almost
every continent in the world. Pliny the Elder, a Roman naturalist,
wrote about their healing qualities back in the first century.
The genus Salvia is from the Latin name used by Pliny, meaning
?afe, unharmed , referring to the medicinal properties of some
of the species. In the early 17th century, the English botanist
John Gerard, in his famous Herbal, described a number of sages,
including common garden sage and one that sounds similar to what
we now call 'Tricolor' sage. He referred to the healing powers
of these herbs as well. Until recently (in horticultural terms
- meaning the 19th century), most gardeners focused on growing
plants for medicinal or culinary purposes; beauty was a secondary,
much less important, consideration.
The results of plant exploration in the 18th and 19th centuries
brought scores of new salvias to English and European gardeners
from Mexico, China, and Africa. Salvia coccinea, indigenous to
Mexico and South America, has been grown for decades as a wildflower.
It was a Dutch breeder, Kees Sahin of K. Sahin Zaden BV in the
1990's who tamed it, so to speak - selecting a plant that was
shorter in height than the species, very free-flowering, with
bright red, very full flower spikes - and introduced it as 'Lady
in Red', an All-America Selections winner in 1992. Salvia coccinea,
a perennial in frost-free areas of the south and southwest, may
also act like a perennial farther north because it may readily
reseed. However, it is usually treated as an annual.
Salvia splendens became the focus of American breeders back
in the 1980's. S. splendens is available in plants of various
heights and numerous colors but is a native of Brazil. Many of
the Texas-tough perennial salvias are native to Texas and Mexico
and are subsequently more adapted to Texas growing conditions.
Some salvias, particularly Salvia splendens, are sensitive to
alkaline soil. Salvia farinacea and S. coccinea are more tolerant
of it. The majority of Texas soil is alkaline, so Salvia splendens
salvias must be grown in raised beds or containers filled with
a commercial potting mix. This still does not insure that hot
summer temperatures will not eliminate the unadapted annual Salvia
splendens.
Salvias are members of the mint family, Labiatae, and they're
easily recognized from their square stems and opposite pairs of
leaves, which are usually rather velvety or hairy. The blooms
form along spiky stems, and each flower has two parts - a colorful
tube (corolla) that projects out from a surrounding "case"
(calyx). (Think of it in terms of lipstick, with the lipstick
tube emerging from the case.) The tube and collar can be the same
color, shades of the same color, or completely different, as in
bicolor salvias. S. farinacea 'Strata', for instance, has a silvery
white case and blue tube.
Salvias are so easy to incorporate into a garden. Place tall
salvias in front of evergreen shrubs; mass them for incredible
impact; spot them around in an herb garden to complement the mostly
green garden. The taller Texas salvias (2 to 6 feet) are the best
for cut flowers, so you may want to put a separate bed of them
in a cutting garden. One of the most delightful aspects of salvias
is that they attract butterflies and hummingbirds. Combine red
with yellow coreopsis, ?aura Bush petunias, and yellow or pink
cosmos for the start of a butterfly and hummingbird garden. Whatever
design you decide on, remember to plant in masses of at least
eight or more plants of each color and type. Hummingbirds and
butterflies will flock to this garden favorite.
Salvias grow well in full sun but most also do nicely in partial
shade. Full sun means six or more hours of direct sun daily. Partial
shade translates into an east location, where the plants will
be exposed to morning sun but afternoon shade. A western exposure
will be too hot for some of the annual salvias. In Texas, plant
even the Texas-tough salvias where they will have some protection
from evening sun and high light which can burn the flower spikes
changing them to brown; darker colors are more resistant to sun
burn.
Salvias need soil that drains well. In soil that's too wet or
too dry, the plants will just sit, producing no new growth or
flowers. In water-logged soil, the roots may rot. When you have
selected a site, amend the soil by digging in a 2-inch (5 cm)
layer of compost or peat moss before planting.
Set salvias in the ground at the same depth or slightly below
the level they were growing in the pots. Many salvia are easy
to start from seed. Rich, fertile conditions are not necessary
to grow salvia, but adequate drainage is. Salvia will perform
best if grown in well-drained soil. When planting from seed, the
seed may be sown outdoors after all danger of frost is past and
the soil has warmed to at least 65 degrees F. Scatter the seeds
right where the salvia are to be displayed. Firm or rake seeds
into a loose soil -- if the seed is planted too deep, germination
can be affected. Keep the soil moist for 5 - 10 days after seeding.
Seeds will germinate in 7 - 21 days. If the early spring has been
cold, soil temperatures will remain cool also. If the soil temperature
is below 65 F., seeds may not germinate as rapidly. Thinning is
really not necessary.
Salvia needs only basic care to provide a colorful abundance
of blooms all summer long. After the seedlings emerge, water VERY
SPARINGLY. In lieu of any rainfall during an entire month, give
the planting bed a long, slow drink. Salvia is drought tolerant,
providing abundant blooms with less water than most other plants.
Herein lies the ?roblem which many people encounter when growing
salvia -- they ?ver-care for their salvia plants. ?ver-care means
too much water and too much fertility. Texas tough perennial salvia
are not heavy feeders. Excess fertilization will cause plants
to grow too tall and produce excessive leaf growth at the expense
of flower production. When ?ver-care occurs, salvia becomes tall
and spindly and blooms sparsely. When the spring-planted or spring-sprouting
salvia begins to look as if there are an abundance of dried seed
pods, encourage new growth and re-bloom simply by cutting the
plants back to one-half their height. They will be back in bloom
in less than a month.
In addition to looking beautiful in the garden, salvias make
great cut flowers. They add touches of color to country-style
arrangements, spiky height to miniature bouquets, and accents
to wreaths and swags. Salvia are particularly pretty as cut flowers,
whether fresh or dried. Fresh-cut salvia bring an airy appearance
to arrangements. To gather salvias for fresh or dried arrangements,
cut them when about half of the flowers have begun to open on
each stem - the flowers open from the bottom up. That's particularly
important if you're going to air-dry the flowers; fully open
blooms will shatter and drop off as they dry. For fresh use, pick
early in the morning before the dew has dried. For dried use,
gather stems later, after the morning dew has evaporated. Salvia
can be used as an everlasting in dried arrangements. You can air-dry
the flowers easily: Simply tie five or six stems together with
a rubber band and hang the bunches upside down in a dry, airy
place. You can let them air-dry upright in a vase, but some of
the stems may flop over. If you're crafting a wreath or swag with
other flowers and herbs before they're dried, remember that the
fresh material will shrink a bit as it loses moisture, so you
should use more of all the materials to have a full, showy wreath.
Most gardeners find Salvia to be relatively pest - and disease
- free. And the GOOD NEWS IS, it is not a preferred food for the
deer population.
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