
A mass planting of black-eyed
Susans, known botanically as Rudbeckias, combined with a mass
of purple coneflowers will produce a spectacular border.
As
you drive down Mississippi's highways and by-ways, don't lament
that we don't fare well with blue bonnets, because this year our
own wild phlox, coreopsis, Queen Anne's lace and Indian Pinks
have been as pretty as a painting.
Another of my favorite wildflowers -- the black-eyed Susan -- is
just starting to advertise its landscape attributes to all who pass
by. Their roadside performance should be a clear signal they will
work just as well in our yards.
Botanically speaking, black-eyed Susans are Rudbeckias. Rudbeckia
hirta is native to Mississippi, and Indian Summer, a Mississippi
Medallion winner, is of this variety. It was also an All-America
Selections winner and recently won the Cut Flower of the Year Award
by the American Specialty Cut Flower Growers Association.
Indian
Summer is one gorgeous flower even if it is an annual. The
plant reaches 42 inches in height and produces its heart out
with large, softball-size blooms. A mass planting of these
combined with a mass of purple coneflowers will make your
border look like you are the gardener of the year. Their site
and care is fairly standard.
Also look for Prairie Sun, this year's All America Selections
winner, with a primrose band around the petal tips.
There are 30 to 40 other species of Rudbeckia native to the
United States. One of my favorites is the Rudbeckia fulgida.
The Goldsturm variety was a Louisiana Select Plant of the
Year and a U.S. Perennial Plant of the Year.
The flowers are not as large as Indian Summer, but they bloom
from May until the first hard frost and then return in the
spring. The leaves are fairly large, oval and dark green.
Keep well watered during droughts, and remove dead flower
heads for maximum bloom. Most years, gardeners are rewarded
with more flower stalks being produced in late summer or early
fall. |
Indian Summer is a gorgeous annual that reaches
42 inches in height and produces its heart out with large,
softball-size blooms.
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I
occasionally run across a gardener who thinks these are too aggressive
and vigorous, but I feel passionately that these are among the best
plants for any gardener -- beginner or expert.
Rudbeckia fulgida are great planted along sunny borders. I have
combined them with the Biloxi Blue and the violet Tapien verbenas.
They also work well with asters, goldenrods, homestead purple verbena,
and liatris or gay feather.
The Rudbeckia triloba is another outstanding species for Mississippi.
This is a Georgia Gold Medal winner, and it could qualify here as
well. It is a prolific blooming perennial that is sometimes treated
as an annual.
It has an abundance of yellow flowers with button-shaped, black
centers produced at the ends of many-branched stems. It is very
erect, growing about 3 feet tall, spreading and bushy. The leaves
are dark green and divided into three oval parts, hence the name
triloba.
Rudbeckia triloba originated on the prairies of the United States.
Plant in full sun in organic-rich beds. To extend the plant's life,
promptly cut back flowers just as the bloom finishes, or let the
seeds ripen and collect them.
Plant in the middle of the border with cosmos, zinnias or the new
Angelmist angelonias called Summer Snapdragons. Be bold and create
large drifts of color.
If you would like a Rudbeckia with a green eye, look no further
than Irish Eyes. This plant has a green cone and single flowers
opening 4 to 5 inches across. With foliage reaching about 30 inches
tall, Irish Eyes are striking and unusual. They are grown as annuals
or short-lived perennials.
If conditioned, black-eyed Susans are great cut flowers with a long
vase life. The secret is to place a cardboard sheet on top of a
deep pan containing 100- to 110-degree water. Cut holes in the cardboard
to allow the stems to be placed through it and into the water. When
the petals are flat and the stem straight, it is ready for the vase.
We can learn a lot from the roadside, especially when it comes to
tough, beautiful flowers. Once we have learned this lesson, the
next step is to take a trip to the garden center to get our own
flowers.
[EDITOR'S
NOTE: Norman Winter is a horticulturist with Mississippi State University's
Extension Service. His office is located at the Central Mississippi
Research and Extension Center at 1320 Seven Springs Road, Raymond,
MS 39154. Locate this article on the World Wide Web at: http://msucares.com/news/print/lgnews/index.html]
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