Thai Red Roselle, also known as Hibiscus sabdariffa, is a stunning plant that can add a touch of vibrant color to any garden. In its native tropical range, it is a perennial plant, meaning it can live for multiple years. However, in regions with more temperate climates, it is typically grown as an annual.
When grown in cooler climates, Thai Red Roselle is treated as an annual because it cannot withstand frost or cold temperatures. It is best suited for USDA hardiness zones 8 to 11, where the winters are mild and the temperatures do not drop below freezing. In these regions, the plant can be grown as a perennial and will come back year after year.
However, in areas with colder winters, Thai Red Roselle will not survive the freezing temperatures and will die off. As a result, it is commonly grown as an annual in these regions. This means that it is planted in the spring, grown throughout the summer, and then dies off in the fall or winter. If you want to continue enjoying the beauty of Thai Red Roselle in these regions, you will need to replant it each year.
The growth habit of Thai Red Roselle is also a factor in its classification as an annual or perennial. It is a fast-growing plant that can reach heights of up to 6 feet. The striking red-colored foliage and stems make it a standout in any garden. The leaves are deeply lobed and have a rich, dark green color, which provides a beautiful contrast to the vibrant red stems.
In terms of care, Thai Red Roselle requires full sun to thrive. It prefers well-drained soil and regular watering, especially during dry periods. Adding organic matter to the soil can help improve its fertility and drainage. It is also a good idea to mulch around the base of the plant to help conserve moisture and suppress weed growth.
Thai Red Roselle is not only a visually appealing plant, but it also has culinary uses. The calyxes, which are the fleshy red covers of the flowers, can be harvested and used to make teas, jams, jellies, and even sauces. The tart and tangy flavor of the calyxes adds a unique twist to various dishes and beverages.
Thai Red Roselle is a versatile plant that can be grown as both an annual and a perennial, depending on the climate. In its native tropical range, it is a perennial, but in cooler regions, it is typically grown as an annual. Regardless of how you choose to grow it, Thai Red Roselle is sure to add beauty and interest to your garden with its striking red foliage and stems.
