Agave chrysantha is the golden-flowered century plant — an Arizonan native whose brilliant golden-yellow flowers are unique among commonly cultivated agaves, where greenish-yellow to pale yellow is the norm. The symmetrical, deeply guttered rosettes of glaucous blue-green foliage, the impressive 7 m flowering spike and the genuine cold hardiness (to −12 to −18 °C in dry, well-drained soil) make this one of the finest agaves for inland, continental gardens in zones 7a–8a — a climate range where most showy agaves fail.
Taxonomy and nomenclature
Family Asparagaceae, subfamily Agavoideae. The specific epithet chrysantha comes from the Greek chrysos (golden) and anthos (flower). Sometimes treated as a subspecies or variety of Agave palmeri (Agave palmeri subsp. chrysantha or var. chrysantha), but more commonly accepted as a distinct species. Native to Arizona, growing in pine-juniper forest, chaparral scrubland, oak woodlands and desert grasslands at elevations up to 2,100 m (6,900 ft).
Common names
Golden-flowered century plant, golden-flowered agave (English).
Morphological description
Habit
A medium-sized, rosette-forming succulent. Rosettes approximately 70–120 cm tall and 90–120 cm wide. May be solitary or produce a few offsets. The rosette is notably symmetrical and well-formed, giving the plant a neat, rounded appearance. Tropical Britain describes it as “highly ornamental and symmetrical.”
Leaves
Sword-shaped, fleshy, grey-green to blue-green (glaucous), deeply guttered on the upper (adaxial) surface — a prominent feature. Margins armed with sharp, dark spines at intervals. Terminal spine stout, dark. The deeply guttered surface channels water toward the centre of the rosette.
Inflorescence and flowering
Monocarpic. The inflorescence is a branched panicle reaching up to 6–7 m (20–21 ft), bearing clusters of brilliant golden-yellow flowers — the defining ornamental feature. Flowers are nectar-rich, attracting hummingbirds, bees and butterflies. Indigenous Tohono O’odham and Pima peoples have used the plant’s sap for food and beverages for centuries. The flowering rosette dies after blooming but reseeds readily, forming colonies.
Cultivation guide
| Hardiness | −12 to −18 °C / 0–10 °F (USDA zone 7a–8a) |
| Light | Full sun |
| Soil | Very well-drained; gritty, gravelly; limestone beneficial |
| Water | Very low; extreme drought tolerance |
| Size | Medium (70–120 cm tall × 90–120 cm wide) |
| Flowers | Golden yellow — unique among common agaves |
Cold hardiness
This is one of the hardiest medium-to-large agaves, making it outstanding for inland, continental gardens:
- World of Succulents: USDA zone 7a to 10b (0 °F / −18 °C).
- Tropical Britain: grows in gritty dry soils at altitude in Arizona, with limestone and basalt dust recommended.
- BBC Gardeners’ World: “hardy, but won’t enjoy winter wet.”
- The Palm Centre: slow-growing, needs absolutely dry winter conditions for best cold tolerance.
The critical factor is dry soil in winter. A plant that survives −15 °C in rocky, well-drained Arizona soil may die at −5 °C in waterlogged European clay. Tropical Britain recommends adding “limestone chunks and basalt dust” to the planting mix and keeping the plant “as dry as possible from late October through to late February.”
Landscape use
An outstanding specimen agave for inland gardens where more tender species fail. The symmetrical rosette, glaucous foliage and dramatic golden inflorescence make it a focal point in gravel gardens, rock gardens, Mediterranean plantings and xeric borders. Deer-resistant. The Palm Centre notes the rosette reaches approximately 1.2 m in width and height, with the flower stalk adding up to 7 m — allow room.
Propagation
Seed: reseeds readily after flowering. Germinates at 20–25 °C.
Offsets: occasionally produced.
References
Gentry, H.S. (1982). Agaves of Continental North America. University of Arizona Press.
POWO (2026). Agave chrysantha. Plants of the World Online, Kew.