Hibiscus rosa-sinensis is one of the most important hibiscus species cultivated worldwide and is best known as a highly valued ornamental plant with diverse flower forms and colors. In the Philippines, it is regarded as the “queen of the Filipino garden,” while it also holds national flower status in countries such as Malaysia. Beyond its ornamental appeal, hibiscus is widely used for food, feed, industrial, and medicinal purposes, including as a natural colorant, salad ingredient, and in the production of jams, as well as in traditional remedies for hair fall, dandruff, infections, and for its expectorant, diuretic, and emollient properties. The plant also carries strong cultural symbolism, particularly in Haiti, Tahiti, and Hawaii. Although its exact origin remains uncertain, studies suggest it may have originated from India, China, or the Americas. Hibiscus rosa-sinensis is broadly distributed in tropical and subtropical regions and includes numerous cultivars with varied floral traits. Related hibiscus species, some of which are winter-hardy and economically valuable, possess beneficial characteristics such as pest and disease resistance, drought tolerance, and waterlogging tolerance, making them important genetic resources for breeding. Extensive intraspecific breeding efforts worldwide have resulted in the development of thousands of hibiscus cultivars.
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