春蓼（学名：Polygonum persicaria），为蓼科蓼属下的一个种。

• 春蓼 Polygonum persicaria L.. 中国植物物种信息数据库. [2013-01-15]. 

Persicaria maculosa (syn. Polygonum persicaria) is an annual plant in the buckwheat family, Polygonaceae. Common names include lady's thumb, spotted lady's thumb, Jesusplant, and redshank. It is widespread across Eurasia from Iceland south to Portugal and east to Japan. It is also present as an introduced and invasive species in North America, where it was first noted in the Great Lakes region in 1843 and has now spread through most of the continent.