Rosella (Hibiscus sabdariffa) is a warm-season hibiscus plant in the Malvaceae family grown for its fleshy red calyces, which develop around the seed pods after flowering. Native to tropical regions, it is an upright annual or short-lived perennial depending on climate.
In traditional food and herbal practice, rosella calyces are dried or used fresh to make tart teas, syrups, cordials, jams, and refreshing drinks. The calyces, rather than the showy petals, are the main part most often harvested and prepared.
Rosella is especially recognized for its deep ruby color and pleasantly sour taste, making it one of the most visually distinctive herbs used in beverages.

