A tall, award-winning perennial with erect, branching stems, Verbena bonariensis is a well-loved garden plant deserving a place in every garden so long as there is border space to plant it in tightly packed clusters of small, purple flowers are produced in abundance and carried on tall, willowy stems from summer to autumn, adding a sophisticated grace to planting schemes. Also known as Argentinian overlain, it is one of the longest-lasting plants in the garden, with flower heads persisting...
