Cassia corymbosa, also known as Senna corymbosa, is an ornamental shrub remarkable for its bright yellow flowers, which brighten up tropical gardens. Native to South America, this plant thrives in tropical and subtropical climates. Its dense foliage of small, dark-green leaves creates a striking contrast with its abundant flowers. This shrub can reach heights of up to 2.5 meters, yet remains easy to control thanks to regular pruning.
In the Au Bois Vert botanical garden in Ivato, near Antananarivo, Cassia corymbosa or Senna corymbosa is a major landscaping asset. Its vibrant colors draw the eye of visitors, creating a soothing, enchanting setting. It thrives in well-drained soils and enjoys full sun exposure. This robustness makes it particularly well-suited to tropical environments, where it can withstand periods of heat as well as heavy rain.
The flowers of Cassia corymbosa generally appear between summer and autumn, but in optimal conditions, the shrub can offer extended blooms. Thanks to its ornamental character, it is often planted near hotels, restaurants or lodges to embellish outdoor spaces. In the botanical garden of Au Bois Vert, Senna corymbosa blends harmoniously with other tropical species, adding a touch of brightness and life to the overall landscape.
This plant is not just beautiful: it also plays an important ecological role, attracting bees and other pollinators. By exploring the botanical garden, visitors can discover how a plant like Cassia corymbosa can contribute to a natural balance while enriching the setting.
Plant use
Cassia corymbosa stands out for its multiple uses, which go far beyond its visual appeal. In landscaping, it is often favored for its abundant flowers and its ability to structure gardens. Its compact form and resilience make it an ideal choice for creating low hedges or defining spaces in tropical gardens. This plant is also frequently used as a focal point in botanical gardens, especially in places like Au Bois Vert, where it enhances the natural beauty of green spaces. Beyond its decorative uses, Cassia corymbosa plays a significant ecological role. Its nectar-rich flowers attract many pollinators, particularly bees and butterflies, thus promoting local biodiversity. This aspect is especially important in regions like Ivato and Antananarivo, where preserving natural ecosystems is becoming a priority. In some cultures, Senna corymbosa is also recognized for its medicinal properties. Although less common, its leaves and flowers have been used in traditional medicine to prepare infusions with purgative effects or to relieve certain digestive issues. However, these uses require thorough knowledge of the plant, as improper preparation can lead to undesirable effects. At the Au Bois Vert botanical garden, this plant serves an educational purpose, allowing visitors to learn more about the importance of ornamental plants in tropical ecosystems while offering a visually striking experience. In nearby hotels, restaurants, and lodges, it adds a touch of nature and serenity, perfectly meeting the expectations of tourists seeking an escape from their everyday surroundings.
Key information
| Common name | Senna corymbosa |
| Scientific name | Cassia corymbosa |
| Origin | South America |
| Natural habitat | Tropical and subtropical regions |
| Life cycle | Perennial |
| Flowering period | Summer to autumn |
