Osmanthus is a common name for numerous trees in the genus Osmanthus, representing the species Osmanthus fragrans (Thunb.) Lour., also known as Rock Osmanthus. It is an evergreen shrub or small tree in the family Oleaceae, with hard wood and thin bark, oblong leaves with pointed tips, and opposite leaf arrangement that does not shed in winter. The flowers grow between the leaves, with a corolla that is fused and four-lobed, small in size. There are many horticultural varieties, including Golden Osmanthus, Silver Osmanthus, Cinnamon Osmanthus, and Moon Osmanthus, among others.

Osmanthus is one of China's traditional famous flowers, a superior garden tree that combines greening, beautification, and fragrance, offering both ornamental and practical benefits. Its scent is pure and can purify dust, while its intensity can spread far, truly unparalleled. Particularly during the mid-autumn season, the dense clusters of blooming osmanthus burst forth, creating a serene atmosphere at night when the moon is full. Sipping wine while admiring the osmanthus, one is enveloped by its rich fragrance, leaving a refreshing and invigorating feeling. In ancient Chinese poetry and verses celebrating flowers, there are quite a few works dedicated to osmanthus. Since ancient times, it has been deeply loved by the Chinese people and regarded as a traditional famous flower.

Osmanthus tea, made from osmanthus flowers as the raw material, is a specialty tea of China, known for its soft aroma and delicious taste, which is beloved by the general public. Osmanthus flowers are widely used in garden construction.