Agave havardiana

Frost Tolerance: Hardy to -18°C.
Sun Exposure: Full sun.
Origin: Mountains of central Trans-Pecos and Big Bend of Texas; Chihuahua and Coahuila, Mexico.
Growth Habits: height 50 cm, width 48 cm, medium sized tight rosette forming Agave having blue/grey/green leaves.
Watering Needs: Little water, extreme drainage.