The perennial everlasting sweet pea is a great climber that will return year after year lathyrus latifolius 39rosa perle39 produces a lovely display of soft pink45lilac flowers during summer although they don39t have the scent of annual sweet peas the sprays of flowers on these reliable climbing plants are just as attractive ideal in traditional cottage gardens in borders on trellises and pergolas and growing through trees and shrubs this lathyrus is fast45growing and ver