The rosettes grow up to 1.8 m tall and 2.4 m wide.
Has yellow-green flowers that attract hummingbirds but plants do not bloom until they are several decades or so old (not a century!) and the plant dies after flowering.
Agave americana 'Marginata' is a beautiful large succulent that forms slowly-clumping rosettes of gray-green leaves with cream to yellow stripes along the margins. It's commonly known as “century plant”.