A very large species growing to between 35cm to 45cm wide (14-17"). It is usually surrounded by runners. Leaves are a beautiful grey-blue. When it does flower, the spike can be over 1m (3 feet). tall with yellow flowers in late summer. Full sun or part shade. Add some additional water in the heat of summer. It may be closely related to Agave americana. It is a large plant so care should be used to give it room.