Persicaria orientalis is a species of flowering plant in the family Polygonaceae,[1] known as kiss-me-over-the-garden-gate and princess-feather.

[2] It was first described, as Polygonum orientale, by Carl Linnaeus in 1753.

It was transferred to the genus Persicaria by Édouard Spach in 1841.

[4] As of April 2023, Kew's Plants of The World Online lists its native distribution as ranging from the Russian far east to Indochina, Malesia and Australia.

[5] It is widely cultivated and naturalized.