Cassia hirta

Cassia hirta is an herbaceous plant or subshrub belonging to the large legume family (Fabaceae), subfamily Caesalpinioideae. This species is a perennial plant commonly found in the wild in tropical regions and possesses characteristic family traits, including pinnate leaves and vibrant inflorescences.

The natural range of this species covers tropical and subtropical zones, primarily in Central and South America. The plant is adapted to humid growing conditions, often found along forest edges, in open sunny areas, and roadsides, where it forms dense thickets.

Botanically, the plant is distinguished by an erect stem covered with glandular hairs, which is reflected in the specific epithet "hirta" (hairy, rough). The leaves are alternate and compound, with several pairs of leaflets. Flowering occurs in yellow flowers arranged in racemes, followed by the development of legume pods containing seeds.

Successful cultivation requires well-drained, fertile soils and a consistently high level of light exposure. The plant is sensitive to low temperatures and therefore requires a warm climate. In agrotechnics, it is essential to provide regular but moderate watering, avoiding moisture stagnation in the root zone, which can lead to rot.

The economic utility of the species includes its use as a cover crop or green manure to enrich the soil with nitrogen, which is typical for legumes. It may also be of interest to the pharmaceutical industry due to the presence of specific secondary metabolites, although widespread industrial cultivation is limited by strict climatic requirements.

• Strong nitrogen-fixing ability
• Requirement for bright, indirect light
• Tolerance to short-term drought
• Primarily propagated by seeds