MsPalm,
The Agave plant has many uses other than as only an ornamental. Since I don't know your location and I don't know who else lives in your community, I might mention that if planted too close to the street or sidewalk, some of your neighbors may 'help themselves' to the large lower leaves of the plant as it grows. The flowers, leaves and stalk are edible. Can you imagine waiting over 30 years for a plant to bloom and waking up to find that someone has taken the blooms for their breakfast!
Not just your plant. Each year my Yucca flowers 'disappear' during the night. It's a good feeling to know that I am feeding my neighbors.