The Japanese Honeysuckle (Lonicera japonica; Suikazura スイカズラ／吸い葛 in Japanese; Jinyinhua in Chinese; 忍冬 in Chinese and Japanese) is a species of honeysuckle native eastern Asia including China (northern and eastern P.R.China and Taiwan), Japan, and Korea. It is a twining vine 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 (0.79–1.2 in) broad. The flowers are double-tongued, opening white and fading to yellow, and sweetly scented. The fruit is a globose dark blue berry 5–8 millimetres (0.20–0.31 in) diameter containing numerous seeds.
It is an invasive species in a number of countries.