Verbena officinalis, the common vervain or common verbena, is a perennial herb native to Europe. It grows up to a metre/yard high, with an upright habitus. The lobed leaves are toothed, the delicate spikes hold mauve flowers.
The flowers are redish-purple with darker spots. A rare and vivid colour. It features 2-3 inch long, pendulous flowers on long spikes in late Spring and Summer.