(aka: Agave 'Blue Glow Mediopicta Alba') Agave 'Luminescence' is a Kelly Griffin introduction of a superb yellow-centered sport of Agave 'Blue Glow' (A. attenuata x ocahui). This is a stunning, but slow-growing gem that eventually reaches 1' tall x 2' wide in 15-20 years. It's best used as a container specimen in cold winter climates. Although we've been propagating this since 2015, our quantities are still quite limited.