Smooth Agave (Agave desmettiana)

Smooth Agave

Agave desmettiana

Sharp, symmetrical rosettes hold desert quiet like a living sculpture. Evergreen succulent perennial; common names: Smooth Agave, Dwarf Century Plant.

Full sun
0–1/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates intense direct sunlight in arid regions, with partial shade recommended in extreme summer heat
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Watering Water deeply only when the entire soil volume is completely dry; avoid standing water to prevent root rot
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Temperature Tolerates mild frost down to 5°C; thrives in warm, low-humidity arid or semi-arid conditions
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Characteristics

  • Leaf: Thick, fleshy lanceolate leaves with smooth margins, lacking the sharp terminal spine of most agave species
  • Flower: Tall, upright spike (3–4 m tall) bearing clusters of tubular yellow flowers
  • Stem: Short, underground root crown supporting the tight leaf rosette
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Care Guide

Watering

Water once every 2–3 weeks when soil is fully dry

Fertilization

Diluted balanced succulent feed once every 2 months. Discontinue fertilization in autumn and winter when growth slows

Eggshell powder topdress:Sprinkle a thin layer of crushed, dried eggshell powder on the soil surface; avoid direct contact with leaves to prevent tissue damage
Pruning
  • Remove dead, brown outer leaves at the base to maintain a tidy rosette shape
  • Cut the spent flower spike close to the rosette after blooming, as the parent plant will die post-flowering
  • Trim damaged or discolored leaves to reduce pest and disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains saponins that may cause vomiting, diarrhea, and lethargy

Humans: Sap may cause mild skin irritation; ingestion can lead to stomach upset and oral irritation

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Garden Uses & Culture

Culture: Symbolizes endurance and resilience in desert indigenous cultures

Usage: Ornamental succulent for xeriscaping; historically used for fiber production