Agave havardiana is a medium- to large-sized century plant native to rocky grassland slopes (often alkaline) from west Texas into Mexico (4,000'-6,000' elevation). Agave havardiana forms a 3-4' wide glaucous blue, single rosette (rarely offsetting) of thick spiny leaves to 20" long and 6" wide...a very hardy species if protected from winter moisture when temperatures fall below 20 degrees F. Mature specimens of Agave havardiana are topped with stunningly massive 12' tall asparagus-looking flower spikes in summer, topped with giant panicles of bright yellow flowers that are a pollinator magnet.
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