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 Dwarf Cavendish Banana makes a good container specimen if given careful attention. Banana plants are extremely decorative, ranking next to palm trees for the tropical feeling they lend to the landscape.