Accent
Queen Victoria Agave
Agave victoriae-reginae · Asparagaceae (Agavaceae)
Also called: Royal Agave, Queen Victoria Century Plant
Queen Victoria Agave (Agave victoriae-reginae) is a very low-water accent well suited to Tucson and the low desert. It thrives in full sun to partial shade.
Queen Victoria Agave at a glance
- Water use
- Very Low (established)
- Sun
- Full sun to partial shade; in the hottest low-desert Tucson exposures, light afternoon shade prevents leaf scorch.
- Mature size
- About 12-18 in H x 12-24 in W; very compact, dense, dome-shaped solitary rosette of stiff dark-green leaves edged with striking white markings and a short black terminal spine.
- Growth rate
- Slow (very slow-growing)
- Bloom
- Creamy white to greenish flowers, sometimes flushed purple/red, on a tall unbranched (spike-like) stalk, Once, after about 20-30+ years (monocarpic), in summer; the rosette dies after flowering and rarely offsets, so it usually does not leave pups.
- Cold hardiness
- Hardy to about 10-15 F; USDA zones 8a-11. Hardy in the Tucson low desert; protect from the hardest freezes when young.
- Soil
- Requires sharply drained gritty, rocky, or sandy soil, ideally with some lime; highly intolerant of wet, heavy soils which cause rot.
- Native range
- Native to the Chihuahuan Desert of northeastern Mexico (Coahuila, Durango, Nuevo Leon), on rocky limestone canyon slopes. Not native to the Sonoran Desert/Arizona.
- Best used as
- Premium small accent/specimen, Containers and pots, Rock gardens and gravel mosaics, Close-up plantings near (but not overhanging) walkways and entries
- Wildlife
- Flower stalk offers nectar to pollinators including bats and hummingbirds at bloom; otherwise of limited wildlife value. Highly prized ornamental, sometimes wild-collected, so use nursery-propagated stock.
- Toxicity
- Sap contains irritating saponins/oxalates, toxic if ingested by pets/people and irritating to skin; the single terminal spine can prick but margins lack teeth. Relatively safe near paths compared to larger agaves.
How to grow Queen Victoria Agave in Tucson & the low desert
Watering
Extremely drought tolerant once established. In Tucson water sparingly, roughly every 3-4 weeks in summer heat and not at all in winter. Excess moisture is the main cause of death.
Fertilizer & nutrients
Not needed; grows naturally in poor, lean soil. At most a very light dilute spring feeding; over-fertilizing spoils the compact form and reduces hardiness.
Pruning & care
Essentially none. Remove only dead outer leaves; the symmetrical form should not be cut. Wear gloves and eye protection for the firm terminal spine, though margins are spineless.
Notes
One of the most ornamental and collectible agaves, valued for its perfectly geometric compact rosette and bold white leaf etching. Its small size and spineless leaf margins make it ideal for containers and tight spaces in Tucson where larger agaves would be hazardous. Slow growth and limited offsetting mean specimens are slow to replace; provide excellent drainage to prevent rot.
Sources: University of Arizona Cooperative Extension; Arizona-Sonora Desert Museum; Desert Botanical Garden; Mountain States Wholesale Nursery references