The hibiscus features a showy, colorful flower.
The Hibiscus genus (Hibiscus spp.) boasts more than 200 species of flowering plants, characterized by showy flowers that feature prominent stamens and large, silky petals. Hibiscus flowers are cultivated as shrubs, annuals and small trees in temperate, subtropical and tropical climates across the globe. With proper care, hibiscus plants will reward the gardener with flowers throughout the growing season.
Location
The amount of sun a hibiscus plant requires depends on the variety, though most require at least half a day of direct sunlight. Many plants will tolerate light shade, although this results in less prolific flowering. Protect hibiscus plants from cold northern winds by planting them behind a fence, building, screen or larger plant. Hibiscus plants are not tolerant of salty conditions and should be protected from salt spray if grown in coastal regions.
Soil
Plant hibiscus in a well-draining soil that is moist, but not water logged or wet. Some hibiscus plants, such as scarlet hibiscus (Hibiscus coccineus), grow naturally in swamps and can tolerate brief periods of flooding. Water regularly and deeply during the growing season, especially during summer droughts. Once a week is sufficient in warm climates. Fertilize about once a month during the growing season to promote healthy flower production.
Pruning
Prune lightly throughout the year in order to remove weak, droopy growth, or diseased or dead branches. More extensive pruning can be done to maintain a healthy, compact shape. Avoid pruning heavily late in the fall or in the winter, as this increases the risk of loping off new flower buds and growth. Pruning late in the season will prolong and reduce flowering. If desired, prune heavily in early spring.
Problems
Hibiscus plants are fairly resilient plants that don't succumb easily to pests and disease. Leaf spots may be caused by several types of fungus, though this can usually be treated simply by removing infected leaves and clearing away debris from around the plant. Southern blight can also become a problem. Prevent the disease by keeping mulch and debris away from the plant's stems. Drought, poor soil and excessive fertilization may cause the plant to drop flower buds.
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