Lonicera japonica, the Japanese honeysuckle or suikazura (スイカズラ／吸い葛 in Japanese; jinyinhua in Chinese; 忍冬 in Chinese and Japanese, 인동 or 겨우살이덩굴 in Korean) is a species of honeysuckle native to eastern Asia including China, Japan and Korea. It is a twining bine able to climb up to 10 metres (33 ft) high or more in trees, with opposite, simple oval leaves 3–8 centimetres (1.2–3.1 in) long and 2–3 centimetres (0.79–1.18 in) broad. The flowers are double-tongued, opening white and fading to yellow, and sweetly vanilla scented. The fruit is a black spherical berry 3–4 millimetres (0.12–0.16 in) diameter containing a few seeds.