Agave virginica aka False Aloe

Agave virginica is a perennial in the asparagus family. Gardeners also call it American aloe or false aloe. Manfreda virginica is another name for the same species. Its native range spans central and eastern America into northeastern Mexico. It grows from Illinois southward and westward to Texas. Wild plants occupy prairies, rocky glades, and open sandy woods. The species is scarce in North Carolina, despite its wide range.

The plant forms leaf rosettes and grows from underground rhizomes. Its leaves emerge in spring and form low clumps. Tall flower stems give the plant an upright summer outline. Flower stalks usually reach 4–5 feet [1.22–1.52 metres]. Some reach 6 feet [1.83 metres]. Listed garden widths span 3–4 feet [0.91–1.22 metres]. Dark green leaves hold water in their thick flesh. Each sword-shaped leaf measures 0.5–1.67 feet [0.15–0.51 metres] long. Red or purple spots may mark the leaves. Their edges may curl upward and bear small teeth. The round green stems lack hairs and may look powdery.

Loose spikes carry as many as 30 yellow-green flowers. Each flower has a tube shape and projecting stamens. A thin, leaflike bract sits beneath each flower. The blooms give off a sweet scent with fruity notes. Missouri Botanical Garden lists flowering from July through October. Chicago Botanic Garden also records blooms in May and June. Plants can flower more than once during their lives. Sphinx and noctuid moths pollinate the flowers at night. Bumblebees visit by day but pollinate them less well. Oval seed capsules turn from green to brown in fall. Each capsule has three chambers holding rows of flat seeds. Wind carries the ripe seeds away from the plant.

Grow this species in sun or partial shade. It needs soil that drains well and suits sandy, rocky sites. It tolerates drought, dry ground, and shallow soils. Alkaline soil suits it, and its growth rate is moderate. Sources place it in USDA zones 6–9. Missouri Botanical Garden suggests a sheltered spot for zone 5. Gardeners can raise plants from seed or divide established clumps.

Its low care needs suit rock gardens and dry borders. It also fits native gardens, slopes, and naturalized plantings. The rosette and tall blooms provide contrast as an accent. Both horticultural sources report no major pest or disease issues. The supplied sources give no species-level food or toxicity guidance.