Propagation
In warm climates lift the corms every 3 to 4 years during early summer and replant during early autumn. 
Remove offsets during dormant period.

Sow seed when ripe and maintain a temperature of 15º C.

Culture
If grown under glass plant the corms in autumn and place in a well lit area. Reduce watering when foliage dies down in summer.

Botanic information
Leaf: The mid-green to dark green lanceolate to linear leaves has a base that tends to be one sided. The upper surface has prominent venation and is covered in fine pubescence. 

Flower: The purple, mauve to blue-violet tubular to funnelform flowers are arranged in an erect raceme that is up to 350mm (14in) long and appears during spring. They sometimes have a faint perfume.

Fruit: The small capsule is not normally seen and usually removed during cultivation.  The seeds are viable but the plant may be reproduced vegetatively in order to maintain true to type.