Propagation
Sow fresh seed as viability is short in situ or stratified first before sowing indoors or sow in flats and place in a cold frame. 

Germination is sporadic and occurs between 14-90 days. Prick out when large enough to handle and pot up into an organic mix, then grow on for one year before planting out, space 150 mm to 200 mm (9 in) apart.  

Division of the rhizome during early spring while dormant; but may be difficult to strike.
Simple layering during the growing period.

Botanic information
Leaf: The pubescent leaves are ovate-cordate with 3-distinct lobes and are glossy pale green with irregularly serrated margins. The slender petiole is up to 100 mm (4 in) long and the leaves turn crimson during autumn. In warmer regions the plant is semi-evergreen.

Flower: The pinkish buds open to campanulate flowers with 5-calyx lobes and 5-triangular white petals with 10-exserted stamens with yellowish anthers and has a superior ovary. They are arranged in a slender spike-like raceme that is up to 350 mm (14 in) tall that is held high above the foliage and repeatedly blooms from late spring to summer.

Fruit: The tiny capsule is composed of 2-unequal parts and contains numerous small seeds and they should be removed when the fruit is dry. The small seeds are viable but the plant can be reproduced vegetatively.