Agave americana

Bold architectural succulent that makes a dramatic statement in any landscape.
Fully hardy across Phoenix Zone 8b-10a, tolerating cold to about 15°F and taking full reflected summer heat without stress.
AMWUA Notes
Referenced in AMWUA guide under Weber's Agave as "also try A. americana Mediopicta".
Water established plants only once or twice a month in the hottest months and rarely in winter. It stores water in its leaves and rots easily in soggy or poorly drained soil.
Little pruning needed — simply cut off any browned or damaged lower leaves at the base. Remove offset pups around the crown to control spread and keep the rosette tidy.
Rarely needs fertilizer; if desired, apply a light dose of low-nitrogen cactus food once in spring. Over-fertilizing produces soft, floppy growth.
Watch for the agave snout weevil, which bores into the core and can collapse a mature plant; remove and destroy affected plants promptly. Also monitor for agave mites and scale.
Growth is slow and steady in the warm season. After many years the plant sends up a towering flower stalk, sets pups, then dies — so preserve the offsets to continue the planting.
Lean, gravelly, or rocky soils; thrives in fast-draining desert ground and resents rich, moisture-retentive soil.
Needs sharp, fast-draining soil.
None — thrives in lean desert soil without fertilizer.
Propagated from the offset pups around the base; also from seed or bulbils produced after the terminal bloom.
6-8 ft
Shallow, non-invasive roots, but offset pups spread outward and form colonies if left unremoved.
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Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.