The hardy hibiscus can survive in a range of locations. It
can prosper from Florida all the way to the northern tip of Illinois. It ranges
from zone 4 to 9. However, the tropical variety of hibiscus will only survive
in Hawaii and South Florida. It thrives between 60 and 90 degrees Fahrenheit. When
the temperature drops the hibiscus will die back to the ground but will return
once the soil temperature warms. However, the tropical variety of hibiscus will
only survive in Hawaii and South Florida. It needs to be potted and brought
indoors to survive the winter. Use a pot slightly larger than the root ball.
Location is of great importance to the hibiscus. The plant
likes slightly acidic, well draining soils. And light, lots of light. The
plants prefer full sun exposure. In partial sun conditions the plants will not
bloom to their potential and may need to be staked. So find a sunny spot for
the hibiscus.
In the summer months the hibiscus needs lot of water. Keep
the soil moist to the touch. Mulch can be used to keep moisture in the ground
around the base of the plant. In the summer the hardy hibiscus requires no water
as it dies back to the ground. The tropical hibiscus should be watered
sparingly in the winter. Only water when the soil feels dry to the touch. Give
the plants a little food while they are growing. Fertilize the hibiscus using a
long release fertilizer in the spring and again in the summer.
There are a few pests to look out for. The hibiscus sawfly
is a little black fly that should be dealt with immediately with a specialized
insecticide. They seem to like the hardy hibiscus whereas the aphids, thrips, and
whiteflies like the tropical varieties. Use an insecticidal soap on these bad
boys.
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