Agave can be perennial or monocarpic succulents, forming rosettes of usually rigid, fleshy, spiny-edged leaves, with funnel-shaped flowers in racemes or panicles often much taller than the rosettes
'Variegata' is an evergreen perennial forming handsome 1.5m tall rosettes of spiny-edged, grey-green leaves with longitudinal creamy-white stripes; seldom flowers