Verbena bonariensis

Continuously present in the top ten bestselling garden centre perennials, Verbena Bonariensis or Argentinian Vervain is an elegant, tall stemmed plant which produces a profusion of tiny purple flowers growing in delicate individual clusters. Lasting longer than any other plant in the garden, this reliable variety also has good resistance to pests making it a failsafe addition to any border, and flowers from June to late October providing months of interest and enjoyment. Winner of The Royal Horticultural Society Award of Garden Merit, Height 2m.