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Propagation

Cuttings

Propagation is best done during the spring by removal of the many rhizomes that are produced by the parent plant.  Removal of a two or three year old plant from its pot will reveal numerous rhizomes, some will have probably circled the pot two or three times before producing another plant. 

Examination of these rhizomes will usually reveal several plants and root systems along their length.  The rhizome can be cut into individual sections taking care that each section contains not only an immature plant but also a root system.  To minimise the risk of infection ensure very sharp knife or scalpel is used when cutting the rhizome. 

These individual plants can then be potted up in the usual compost, and treated exactly like a mature plant.  The only care that needs to be taken is to ensure that the compost is kept moist at all times, other than that no special attention is required. 

Alternatively, the rhizomes may be unwound and brought out of the pot,  The parent plant is then repotted in the original container and the rhizomes laid and pinned across other peat filled containers until roots have been established.  The rhizome can then be cut from the parent plant.  With this method growth is not retarded because the rhizomes will continue to feed the small plantlets until a self sustaining root system has been developed. 

Division

Division of the main plant is also possible, providing each division has some roots attached.  As with rhizome cuttings this has to be carried out during the spring when new growth (usually a flower spike) is just beginning to appear.  Using this method it is normal to find that growth of the subsequent plants will be extremely slow until the root systems have managed to establish themselves.