Propagation
Divide established clumps during late spring to early summer.

Botanic information
Leaf: The mid-green leaves are narrow elliptical to lanceolate with a long strong petiole and an acuminate apex. The texture is thin and the surface is pleated.

Flower: The labiate flowers have pink to purple lips that are 3-lobed, and are brownish on the inside. There is up to 20 blooms arranged in a raceme that is up to 1.8m (6ft) tall and appear from spring to early summer. 

Fruit: The small capsule contains tiny seeds that are viable but the plant is commonly reproduced vegetatively.