Propagation
Sow fresh seed during spring and maintain a temperature of 18º to 21º C. (64º to 75º F).

Botanic information
Leaf: The leaves are broad lanceolate to oblong up to 50 mm (2in) wide with a thick fleshy texture and tends to be incurved. The whitish margin is entire and the apex is acute with a sharp spine. 

Flower: The tubulate flowers are arranged in a spike-like raceme on a scape up to 1.2m (4ft) tall. It appears from the centre of the plant during summer and when the flowering period finishes the plant dies off.

Fruit: The leathery capsule contains numerous dark seeds that are viable and the plant can only be grown from seed.

Culture
Succulents are easy to care for pot plants and are excellent as children’s first houseplant. They can tolerate a great deal of neglect and mismanagement allowing beginners to tune their horticulture talents.

These plants prefer hot days and cool nights and during winter tolerate temperatures that fall to 4.5ºC (40ºF). Bright indirect light is essential and if grown in full sun some shade is required. 
When watering allow the compost to dry a little before re-watering. Reduce watering during winter to once a month. The soil must be well drained and never allow it to become boggy as this will result in the plant rotting. Misting the leaves is not required and the plants prefer fresh air. Houseplants should be placed near an open window.

When re-potting select a shallow pot that is just larger than the current one and pot up during spring in a loam based gritty potting mix.

General plant symptoms
Stem elongation is normally the result of too much water or lack of light. Rotate the plant to even growth and place in a brighter position.