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Copyright
© 2005-2010,
Susan Bryant
Lakeside Callas |
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All photos copyrighted, please ask permission
before using. |
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Hibiscus
We have many different colors.
These are DuPont Cajun Hibiscus.
They are ever-blooming plants with very unusual flowers.
They are not hardy to our area, but can be brought inside in the winter to grow
year around.
For best growing keep above 60 degrees. Keep them quite dry in the winter.
We have very limited amounts of these- when they're gone, they're gone!
These are too heavy, and too big to ship, sorry.
| Variety Name |
Photo |
Description |
Qty
avail |
Price |
| Blueberry Thrill |
 |
Blueberry Thrill’ has bluish-purple flowers with a
pink-orange fringe and a deep purple throat. The 5-6” blooms may be
single or double with a tuft of petals on top often splashed with pink.
Flowers last 2 days. This fast-growing hibiscus variety is upright and
well branched. and needs lots of sun and fertilizer. |
2 |
$15 |
| Chartreuse Rose |
 |
Flowers are 6 inch
doubles that last between one and two days. The eye
of this flower is a very dark red. Surrounding the
eye is a halo gray. Beyond this is a body of yellowish-green
that changes intensity with the weather. Sometimes it
appears more green, at other times only yellow. After this is another
small band of melon, leading to the ruffled yellow edge.
The leaves are medium green in size and color. |
1 |
$15 |
| City Slicker™ |
 |
Commonly called “Queen of the Tropics”, hibiscus are
perfect for patio containers. This newly hybridized variety, ‘City
Slicker’, is a prolific bloomer for the summer garden. The 6-6.5”
flowers have a pink heart surrounded by a burgundy center encircled by a
violet halo and a pretty pink outer ruffled edge. These blooms are
stunning! The plant is low-growing and well-branched. Grow in full sun
with lots of fertilizer. |
1 |
$15 |
| Mon Ami |
 |
The fully double, hot pink, 6” blooms create a wonderful
contrast to the large light green leaves. “Mon Ami’ is a good candidate
for hanging baskets since the plant has a draping form unless it's
pinched back early to encourage more vertical. Grow in full sun with
lots of water and fertilizer. |
1 |
$15 |
| Persimmon |
 |
Blooms are 7" and its a wave of delicate pink petals.
Excellent growth habit |
1 |
$15 |
| Vermillion Queen |
 |
Vermillion Queen' is a prolific bloomer
when pruned early, this queen’s upright habit is the perfect form for
trees. |
1 |
$15 |
| Untamed Heart |
 |
“Untamed Heart” has very full, double, maroonred 6”
blossoms in a large cluster of many petals. This fast-growing variety
has attractive, dark green foliage and grows 2-4’ tall. The plant is
well-branched and benefits from an early pinching to keep it stocky and
well-shaped. Grow in full sun with lots of water and fertilizer. |
1 |
$15 |
| Flower Size |
 |
|
GROWING DUPONT CAJUN HIBISCUS
INTRODUCTION
Be Cautious about placing plants immediately in direct sunlight. Introduce them
to full sun slowly, over a period of 8 to 10 days.
Hibiscus MUST have a well-drained, moisture retentive soil. Even though some
cultivars are more tolerant of drainage conditions than others, all tropical
hibiscus need a well-drained growing medium.
Most commercial "jungle mixes" and professional potting mixes are fine as long
as they drain well and retain moisture without breaking down too quickly. Add
some composted hardwood bark if it appears that the soil lacks sufficient
porosity. Ideally the potting mixture should be as close to 6.8 as possible and
contain a pH buffer.
WATERING
Hibiscus like "even" watering. Don't let your hibiscus get too dry or stay too
wet. If dried out for too long, the plant can drop its leaves or even go into
shock and die, despite renewed watering. If overwatered, especially in pots,
fungal disease can destroy the root system, or the soil can pack and deprive the
roots of needed oxygen. In short, Do NOT water plants if they are still wet.
In summer, when the plants are in active growth, they require more water. While
not all cultivars enjoy the same amount of water or tolerate the same amount of
dryness, hibiscus in general like being well watered, especially in hot weather.
Even so, hibiscus do not like to be continually wet, as this promotes fungal
disease and packs the soil, robbing it of vital oxygen. Do not leave them
sitting in saucers full of water for too long. If possible, water in the
mornings and let the plants dry out over the course of the day.
During cooler periods of the year, water more sparingly. In winter, when the
plants are NOT in active growth, water only when the plant is dry. Cool moist
conditions are ideal for fungal diseases, and one must be careful NOT to create
those conditions. Occasionally, plants will lose all their leaves. This is
either a reaction to stress or the natural process of renewing its foliage for a
different season. When plants are without leaves, there is relatively little
transpiration and it may be days before they need watering again. Overwatering
now can cause "root rot."
FERTILIZING
Fertilize light but often. Hibiscus in active growth are heavy feeders,
especially when planted in pots. Some growers fertilize every time they water,
in which case they use a diluted, water-soluble fertilizer solution at less than
full strength.
Apply fertilizers in the cooler hours of the day, and be sure to water well
before applying any granular fertilizer. Be especially careful to keep the
plants well-watered after using any granular fertilizer.
The prevailing opinion is that hibiscus do not need (nor want) high amounts of
Phosphorus (P, the middle number), but they do demand high quantities of
Potassium (K, the last number). Tropical hibiscus fertilizers have ratio numbers
like 9-3-13, 10-4-12, and 12-4-18.
Granular fertilizers have the advantage of providing plants with a constant
source of nutrients. But some, even those marked hibiscus fertilizer are prone
to burn the roots of the plants, especially if the plant is potted and becomes
too dry. Moreover, these fertilizers break down unevenly, depending on
temperature. The hotter the temperatures, the faster the granular fertilizer
breaks down (despite label assurances). Some growers place a layer of mulch over
the granular fertilizer to slow its rate of break down during the hot summer
months.
For large hibiscus in the ground, it is easier to keep them consistently
fertilized by placing "tree stakes" around the shrub/tree during the early
spring. Since stakes for hibiscus are not available, I use stakes designed for
palm trees. I have found that these formulas generally match those of hibiscus
fertilizers very closely.
Remember: Phosphorus buildup or pH unbalance account for some 95% of the cases
of slow decline and eventual death in hibiscus. Phosphorus, the "P" in the N.P.K
formula, affects bloom quality and quantity, but hibiscus only need a small
amount, since hibiscus "store" phosphorus. Excessive phosphorus will bind up
other minerals. The effect can prove toxic to the plant.
BUD DROP
Notice buds dropping excessively? "Bud Drop" is a sign of stress. It is
occasionally a problem, especially with double-blooming varieties, during
excessively hot weather. Some hibiscus cultivars are more sensitive to heat and
seem to drop buds almost naturally under these conditions. Hibiscus grow best in
daytime temperatures ranging between 75 and 85 degrees Fahrenheit.
Not all "bud drop" is caused by excessive heat. Any stressful condition can
prompt the plant to drop its buds. In many cases the cause is one of the
following: lack of water, too much water, wind, heavy rain, insects (especially:
hibiscus midges or thrips) and/or an unbalanced feeding formula. Try moving the
plant into a more shaded area and regulate the watering more closely.
LIGHT AND TEMPERATURE
Some of the new cultivars are grown very successfully in light shade. Potted
hibiscus enjoy some protection from our intense, summer sun. A pool/shade
screen, providing 25% shade, offers blessed relieve during the hottest part of
the summer day and helps prevent stressing the plants, especially those planted
in black, plastic pots. Lighter colored pots help prevent the roots from
overheating.
Many growers recommend a good layer of compost once a year. If that cannot be
done, meet your plants' needs with good soil porosity and an adequate fertilizer
formula.
Hibiscus can normally withstand a light freeze. But if the weather is windy,
temperatures as high as 45 degrees can still produce damage. How much cold a
plant can tolerate depends on exposure, wind strength, length of cold, available
moisture and slight differences in cultivar tolerances.
Hibiscus need real daylight to bloom. During the winter months, they enjoy full
sun all day and will bloom beautifully as long as the temperatures remain mild.
A slow down in bloom production and a decrease in blossom size will be
noticeable once the evening temperatures drop regularly below 55 degrees
Fahrenheit.
INSECTS
Do not use Malathion liquid to control insects. The oil "carrier" in Malathion
will cause the leaves to drop and may even kill the plant. WP (Wettable Power)
Malathion is fine. Most insect problems (aphids, spider mites) are best handled
by spraying underneath the plant's leaves with a hard stream of water at
relatively close range. Careful observation and persistence are necessary to
keep the insects at bay.
To control severe infestations of mites and/or whitefly, soap sprays are
recommended. Use Insecticidal Soap according to the label. Use Palmolive or Dawn
or Sunlight soap at one to two tbs. per gallon to smother the insects on the
plants. If you need to use more than 2 tbsp/gal, remember to later rinse off the
plant. Spray twice a week until bugs are gone.
There are occasions when chemical sprays seem to be the only way to stop a major
infestation. Should you choose to use chemicals, follow directions carefully and
use with caution. Although few insecticides injure hibiscus, it is always good
to read labels and to see if the product is recommended for hibiscus.
Spray your plants in the evening after the heat of the day or very early in the
morning. This applies to both using insecticides or foliar feeding. There is
less danger this way of burning the leaves.
REPOTTING
There is no easy "rule of thumb" for deciding when a plant should be repotted.
Some growers routinely repot every year; others every other year. However, it is
really the plant that decides when to repot. If it becomes lethargic, take a
good look at the soil mix. It may have "broken down" and lost porosity. Rework
the soil or repot. Should the roots be pressing hard against the pot, it is time
to repot.
When repotting, move the plant up to the next size pot rather than putting a
small plant into an oversized pot. Instead of potting up, another solution is to
and prune the roots and the top of the plant (about 1/3 of each) and then return
the plant to its original pot. Water moderately until the root system is well
established.
Plants that are newly potted up should be watered well, but NOT soaked. Unlike
established plants that need thorough watering, newly planted hibiscus need to
be encouraged to seek out moisture at the bottom of the pots. Overwatering while
a plant is still "filling" in the pot with its root system will encourage root
rot and discourage deep root growth. Judicious bottom watering is a good way to
avoid this problem.
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