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Coastal Gardening:
My, how our approach to coastal gardening has changed in just
a few years. Its easy to remember so many of the failed
designs of the Fifties and Sixties; overpowering stretches
of grass dotted with a few islands of short-lived exotics,
home-girdling, yellowing foundation plantings (the chlorotic
flower moat), or desolate moonscapes.
In the Nineties, gardeners creating a lush garden on the
coast are working with a richer palette of plant materials:
highly adaptive, proven plants that can handle extremes of
temperature, high salinity soils, drought, strong winds and
periodic inundations of brackish or salt water. Todays
good news is that the modern daylily fits this profile for
success!
According to the All American Daylily Selection Council,
the discovery was long and slow in coming. It
credits two horticulturists in particular for publicizing
this dimension of performance: Dr. Darrel Apps of Bridgeton,
New Jersey and Dr. Stewart Nagle of Clear Lake Shores, Texas.
For Professor Nagle, the revelation came after repeated inundations
of salt water had cut down everything in his shore-side garden
but older varieties of roses and his daylilies. We would
have standing water here a foot deep for a week at a time.
For centuries, during storms, salt water would regularly push
inland from Galveston Bay. After a while it dawned on me that
my daylilies were salt tolerant.
For Darrel Apps of Woodside Gardens, it took a voyage right
out of the pages of a Nineteenth Century plant explorers
diary to open his eyes. On assignment from the world-famous
Longwood Gardens, he was cataloging and acquiring plants on
the island of So-Chung Do off the coast of Korea. We
found ourselves climbing a seafront hillside that was extremely
steep. When specimens were found, we had to dig with one hand
and cling to bushes and outcrops with the other to keep from
sliding away. All the time we were at it, we were being lashed
by sea spray. This was no doubt a salty environment and the
daylily species (probably undisturbed for centuries) we were
collecting were perfectly at home there.
At one point as I started after a fine specimen, a
crowd of Korean women began screaming at us. We had entered
a mined area. Now that was a heart-stopping experience.
Reflecting a moment, he laughs, I guess we can add to
the daylilys list of virtues that it tolerates salt
and minefields.
Beyond salt tolerance, what the daylily contributes to the
gardeners palette is a whole spectrum of colors. Every
hue of the rainbow is present save a true blue and a pure
black. And these adorn blossoms that range in diameter from
one inch to fourteen. The lighter colors handle intense sunlight
and heat better. Moreover, their carrying power
(their ability to be seen) will light up an entire area. The
thoughtful gardener will use the darker colors along the shadier
sides of a home, in front of lighter colored foliage or structures.
Cautions Darrel Apps, When buying daylilies for use
on properties that experience moderate to strong prevailing
winds, pick out those that have shorter scapes.
These are the stalks that hold the bloom aloft and they can
vary from 12 to 60 inches in height. Also, by carefully picking
pre-tested daylilies, we can have bloom along our coast for
75% to 90% of the normal perennial bloom season. In most places
thats easily from late May to October. Its not
uncommon to have bloom periods of 100 to 150 days in the northern
to middle states and nearly 300 days in the south.
Another excellent way to bring floral color right up onto
patios and decks and into the home is by growing daylilies
in containers. Theyre so easy to move and to maintain.
Retirees love them! And for those who are restricted to wheelchairs
or who can only do limited yard duty, it reawakens the possibility
of gardening once more. Keeping a saucer under the pot will
even out the soil moisture content. Dont worry about
emptying the saucer, as daylilies dont mind wet feet
or salty water.
Throughout the coastal plain, theres one constant enemy:
erosion - whether due to wind, flooding or wave action. Heres
where this plant goes beyond simple beauty and into the realm
of high utility, stresses Apps. The root system forms
an enormous soil-anchoring mat. What develops below ground
will be at least as big as the foliage showing above ground.
Its one reason that in California daylilies see frequent
use in areas prone to mud slides. Similarly, its not
surprising that when the North Carolina Department of Transportation
chose the daylily as its plant of choice for roadside enhancement
projects, the engineers cited its ability to prevent erosion.
For those gardening seaward, the daylily will be a
staple, concludes Apps. Virtually unaffected by insects
or disease, reveling in the sea breezes, it can overcome a
lot of obstacles while showing off its beauty.
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