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
'Mediopicta Alba' is an evergreen perennial forming striking rosettes of spiny-edged, grey-green leaves, each with a creamy-white central stripe. Flowers seldom seen