Propagation
Sow fresh seed before they dry out during autumn or spring and place in a cold frame to germinate which can take 1-6 months at 16ºC (61ºF).  Warm stratification for two weeks at 18ºC (64ºF) can shorten germination time. The seedlings may be variable.

Division of the rhizome during late winter. Difficult to transplant as the roots dislike disturbance.
Softwood cuttings up to 100 mm (4in) long then placed in a sandy well-drained soil and place in a cold frame.

Note:
All parts of the plant if ingested will cause stomach upset and contact with the leaves may cause skin irritation, wear gloves when handling.

Botanic information
Leaf: The trifoliate leaves are 2-ternate with 3-5 ovate leaflets that are lobed or cut into segments that are broadly-oblanceolate. The upper surface is a dull mid-green and the petiole is long.

Flower: The bisexual campanulate flowers have a flattened corolla with 2- thin membranous lanceolate sepals and 4-petals. The cordate rose-pink outer two are spreading and pouched at the base and the exserted white inner two petals are attached at the tips. 

They have a short pedestal and there are many are arranged in a long pendant axillary raceme that is held above the foliage on a slender scape from late spring to early summer.

Fruit: The pendant pointed cylindrical pods have reddish stems and contains numerous oval smooth seeds, up to 2 mm in diameter. The small seeds are viable but the plant is commonly reproduced vegetatively.