Aloysia triphylla, or Lemon Verbena is a woody, shrub with large, shiny oval crinkly, mid green leaves and a rather open, almost straggly habit. It is noted mainly for its outstanding lemon scented foliage which is used extensively in cooking and infusions.
In summer and autumn it produces racemes of dainty mauve flowers, though it is grown as much for its lemon scented foliage as for its flowers.
It is a popular garden herb so make sure you plant it somewhere where you will brush past it often to release its lovely lemon scent.
Lemon Verbena is evergreen in warmer winter locations but will drop its leaves in colder locations.