Perennial pea is a well-known garden plant with bright and attractive flowers. However, there are several synonyms for this plant, including everlasting pea, sweet pea vine, and perennial sweet pea. These alternative names are used interchangeably to refer to Lathyrus latifolius, a species of flowering plant in the Fabaceae family. The plant is native to Europe and western Asia and features long stems, with flowers growing in a range of colors, including pink, purple, and white. It is also a popular choice for gardeners, thanks to its long flowering season, which typically extends from summer right through to autumn.