About Jasminum mesnyi Hance
Jasminum mesnyi is an evergreen scrambling shrub that reaches 3 meters (10 feet) tall and 1 to 2 meters (3 to 7 feet) wide. It produces fragrant yellow flowers during spring and summer, and may bloom year-round in warmer climates. It grows primarily in the subtropical biome, and its climbing growth habit can be trained to form a dense shrub. Its leaves are opposite, glossy, and trifoliate, though leaves at the base of branchlets are simple; individual leaf blades are broadly ovate or elliptic, sometimes nearly round, ranging from 3 to 7 cm long. Petioles measure 0.5 to 1.5 cm long. The 3 cm wide yellow flowers are usually solitary, growing on short axillary shoots, and only rarely grow at stem terminals. Flowers have leafy, obovate or lanceolate bracts 5 to 10 mm long, surrounded by small leaf-like bracts. The calyx has 5 to 6 narrow lobes, and the corolla is semi-double yellow with obtuse lobes. It produces spherical, blackish fleshy fruit around 8 mm in diameter. The form most commonly found in cultivation has semi-double flowers. This species is not frost-hardy. When given suitable support, it can be grown as a slender climber, but it requires regular pruning when grown in confined spaces.