Agave havardiana (Harvard's Agave)
Harvard’s Agave is an attractive medium size, rosette-forming agave that is noted for its attractive blue-gray evergreen leaves. It is native to the Chisos mountains of Big Bend National Park.
Harvard’s Agave is very drought tolerant and requires excellent drainage. Poorly-drained soils inevitably lead to root rot. It is hardy to at least 5 degrees Fahrenheit. Plants have reportedly survived winters with temperatures as low as -10F, but cold temperatures should be "dry cold" as opposed to "wet cold".
Agaves create strong architectural accents and do very well planted en masse or used as a focal point.
AT A GLANCE
|Sun exposure||Full sun, part sun|
|Mature height||2-3 ft|
|Mature spread||3-4 ft|
|Notes||Sharp spines. Needs excellent drainage.|
|Present in state|
|Present in county and native|
|Native to North America, but adventive & escaped in state|
|Not present in state|
|Present and rare, native in county|
|Previously present, now extinct|
|Questionable presence (cross-hatched, regardless of color)|