Botanical Name : Hibiscus rosa-Sinensis Tamil Name : Sembaruthi flower The blooms are huge, showy, trumpet-shaped, have five petals, and range in colour from white to pink, red, orange, peach, yellow, and purple, with a width of 4â??18 cm. Medicine Benefits of Hibiscus Flower Powder : One of the most important health benefits of the hibiscus flower is that it boosts your body's immunity. Hibiscus flower extracts can help you maintain your body's fluid balance. How to Consume : This powder can be taken first thing in the morning on an empty stomach or mixed with hot water and consumed regularly.