Cultivars
'Marginata aurea'    syn. 'Variegata'
This slow growing perennial succulent is the most sought after variegated succulent in the world. It is solitary or clump forming and grows to a height to 1.5m (5ft) with large blue-green arching lanceolate leaves that have solid creamy white to yellow band along the margins and are armed with dark spines. 

It is planted in large tubs or rockeries for colour contrast and may be used as an indoor plant in cold regions. It is only propagated vegetatively from suckers and is an easy plant to cultivate.
Note: 
Care should be taken when selecting a site as this plant has sharp spines that can cause severe injury.

This plant has many syn. names that include Agave americana 'Aureomarginata', Agave ingens var. picta, Agave zonata, Agave variegata, Agave subzonata and Agave picta

'Medio-picta Alba'
White Striped Century Plant
This slow growing attractive clumping or solitary perennial succulent grows to 1m (3 ft) tall and has short blue green lanceolate leaves with a creamy white to greyish white central band that runs down the centre. The margins are armed with  spines and the acuminate apex has a grey-blue pungent terminal spine. 

During summer after many years (10-35) the plant produces a 5m (16 ft) tall inflorescence after which the mother plant dies off. It is only propagated vegetatively from suckers and is planted on embankments or in patio pots and planter boxes.
Note:
Care should be taken when selecting a site as this plant has sharp spines that can cause severe injury.

This plant has many syn. names that include, Agave ingens var. picta, Agave zonata, Agave variegata, Agave subzonata and Agave picta