With verbena bonariensis the main attraction is the display ofclustered cushioned heads of glowing lavender coloured flowers which are produced on top of stiff upright branching stems between july and october bees and butterflies are attracted to feed on the nectar adding their presence tothe manyreasons whyperennial verbena is enjoying a resurgence in recent years the plant is well suited to being teamed with grasses for a tranquil planting scheme or placed at the back of herbaceousborde