Propagation
Divide established clumps during spring before new growth commences. 

Botanic information
Leaf: The leaves are ovate to lanceolate with pubescent undersides and is arranged oppositely to alternate. The petiole is long and the apex is acute. They are strongly aromatic and are commonly used in cooking, or for tea and in potpourris.

Flower: The tubulate flowers have 2-lips with the upper forming a hood and the spreading lower lip has three lobes. The flowers are arranged in a 2-whorled cluster that is terminal or axillary and is accompanied with purplish tinged bracts. The flowers appear during mid-summer.

Fruit: The small nut is not commonly seen and the plant is normally reproduced vegetatively.