If you are a fan of lavender as a garden border plant you will love vitex agnus45castus f latifolia a spectacular deciduous shrub from a distance it almost looks like a giant lavender33 in early autumn it becomes full of sprays of purple45blue scented flowers it makes a great backdrop to a garden border full of perennials with white purple and blue flowers it can be planted as a stand alone specimen but is particularly striking planted as an informal tall hedge the rhs has awar