Agave montana
Family: Asparagaceae, formerly Agavaceae​
​Common Name: mountain agave
Origin: The natural habitat of Agave montana is within the Mexican states of Tamaulipas, Nuevo Léon, and Querétaro, at altitudes up to 9,000 feet in elevation.
Description: Agave montana is a slow-growing, perennial succulent that forms solitary dark-green rosettes, taking the shape of an asymmetrical artichoke. Additionally, the agave possesses a terminal spine and reddish teeth along leaf margins. Mature plants (10+ years) will grow a large asparagus shoot that develops clusters of yellow flowers.
  • Interesting Features:
    • Unlike other species of agave, A. montana does not produce any offsets or buds, and will completely disappear after flowering.
    • The mountain agave will attract hummingbirds and bees, and is deer resistant.
  • Uses: There are no known ethnobotanical uses of A. montana. However, the plant has been extensively used in desert gardens or xeriscaping.

Cultivation and Care:
  • Watering: Low
    • Agave montana is drought tolerant, but should be watered whenever soil is dry. Provide supplemental watering during the growth period in spring and summer.
  • Soil: Plant in well-draining soil that contains a gravel-mix substrate. Good draining soil is required, as Agave montana will perish in standing water.
  • Lighting: Provide full sun, although partial shade is tolerated, and preferred when planted outside.
  • Propagation: Agave montana is only propagated through seed, but can be grown easily. Germinate in vitro in gelatin, agar, or other growth mediums, and cover sparsely with soil, as light is required for germination.
  • Cold Tolerance: 10°F, USDA hardiness zones 8a to 10b.
  • Special Accommodations: Despite possessing cold hardiness, protect Agave montana from extended periods of sub-zero temperatures.
    • Additionally, take care to avoid damage by the sharp teeth and spines – do not plant near walkways, and wear gloves when handling.

Sources:
  1. Llifle Encyclopedia of Succulents
  2. San Marcos Growers
  3. World of Succulents
  4. Plant Care Today
  5. Dave's Garden
  6. Gardenia