Liquorice plant, Anise plant Perennial  

■ Spikelet-shaped stems, covered at the top with dark lavender-blue flowers.
■ The leaf has a strong aniseed smell and is used, both fresh and dried, to make tea. 
■ Agastache flowers produce a considerable amount of nectar, is thus one of the better honey plants.
■ A combination of fragrance and colour in your garden.