Aloysia Citriodora
 

Aloysia Citriodora.--This favourite lemon-scented verbena should be
grown in rich mould. If grown in the open, it should be trained to a
wall facing south, and in winter the roots need protecting with a heap
of ashes and the branches to be tied up with matting. It is increased
by cuttings planted in sand. August is its flowering season. Height, 3
ft.