Hibiscus Bush Information

Basic Facts

• Known for its lush foliage and colorful blooms, the hibiscus is a well-recognized flower of warmer, southern regions. Most notably, the hibiscus variety Hibiscus brackenridge is the state flower of Hawaii. Commonly viewed as an ornamental bush, the hibiscus comes in a range of varieties, including both annuals and perennials, depending on which of the more than 220 specific species you choose. In the U.S., most perennial versions are grown in the southeastern states. Annual varieties are less numerous and are often grown more as a potted tropical shrub than an in-ground bush.

Colors

• As many hibiscus enthusiasts know, these bushes are well-loved for their colorful ornamental flowers. Even more interesting than the vividly hued blooms is the fact they are often known to change colors throughout the year. Depending on the specific time of year, outdoor temperature or amount of light, this exotic bush can morph from one shade to another. The main categories of hibiscus colors include the pigment categories of carotenoids, or yellow-red-orange shades; anthocyanins, or blue-pink-purples; and the yellow or white flavonols. Carotenoid varieties typically have a more constant color, but may grow bolder in extremely hot or sunny conditions. Anthocyanin pigmented hibiscus often form banded colors and, similar to fall leaves, turn red as the weather grows colder. Likewise, favonol pigmented flowers change colors with cooler temperatures. For example, a white hibiscus may turn more yellow as the mercury drops.

Hardiness Zones

• Depending on where you live, growing a hibiscus bush may be more or less difficult. While some warm southern climates may permit year-round growth, other regions may necessitate bringing your bush inside during the cold winter months. The hibiscus bush can be grown seasonally outdoors almost anywhere from the USDA Hardiness Zone 4 to Zone 9. This includes much of the U.S., with the exclusion of extremely cold states such as Alaska, parts of Minnesota and parts of Montana. However, prolonged temperatures below 30 degrees Fahrenheit can kill the hibiscus.

Requirements

• While planting your hibiscus bush in the correct climate is key, you must also take into consideration requirements such as light and water. As a warm-weather or tropical-based plant, the hibiscus does better in areas with full sunlight. During the hot, sunny summer months, the hibiscus needs quite a bit of water. Although you must water your plant daily, do not over-water or flood the area. During cooler times, these colorful plants may be susceptible to fungus. Help to curb disease by minimizing watering. Only give your cool-weather hibiscus water when you see it looking droopy or see the leaves starting to dry out.