Hibiscus is a member of the Malvaceae family of plants. It is native to subtropical regions. There are annuals, perennial herbaceous plants, and shrubs in this genus. Hibiscus flowers are used. It has alternate ovate leaves. The flowers are large and eye-catching and range in colors from yellows to orange, reds, and purples and pinks. The size also varies from 4 to 20cm or 2 to 10in. There are many species of Hibiscus syriacus is also known as Common Garden Hibiscus or Rose of Althea or Rose of Sharon.
Hibiscus flowers are trumpet-shaped. There are many species but you can organize them in two major categories, the garden deciduous shrub such as Syriacus and the indoor evergreen type such as Hibiscus rosa-sinensis. The garden variety is hardy and easy to care for but the indoor variety has a longer flowering season.
Plant Hibiscus in the sun but sheltered from the wind. Plant it in moist, well-drained soil. You can also plant the outdoor variety in containers or large pots.
Indoor variety needs also a very bright location with direct sunlight, they prefer humidity and temperature should not fall below 10°C or 50°F. Any good compost would do and you will need to repot them every other year in early spring. You can put them outside in the summer and return them in autumn. You should water them regularly specially from April to October and a bit less during the rest of the year. Fertilize them during growing season. Prune them for shape and to keep them bushy.