Agave multifilifera Gentry
Many-filament Agave
Agave multifilifera, described by Howard Scott Gentry in 1982, is one of the most singular and spectacular agaves in the genus. It is endemic to the Sierra Madre Occidental of Mexico, distributed across Chihuahua, Sinaloa, and Sonora, where it grows on rocky slopes and ravines at altitudes of 700–2,200 m a.s.l. under humid subtropical mountain climate. Its most distinctive character is the enormous number of narrow leaves (can exceed 200 per rosette) each covered with numerous long white filaments that curl outward, creating the appearance of a vegetative hair explosion or as if covered in fine white wool. This dense mass of filaments gives it an unmistakable texture, completely different from any other agave. Highly sought by succulent collectors and garden designers worldwide.
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Overview
| Category | Classification |
|---|---|
| Family | Asparagaceae |
| Genus | Agave |
| Growth Habit | Very dense, multi-leaved rosette (80–130 cm diameter), acaulescent sometimes with short stem in mature specimens, monocarpic. Moderate growth for an agave. Produces scarce basal offsets. |
| Conservation Status | Least Concern (LC) – IUCN. However, extraction for the collector trade and habitat fragmentation in the Sierra Madre Occidental represent growing threats. |
| pH Target | 6.0–7.5 |
| Type | Sandy-loam to stony, well drained with some organic matter |
Origin & Habitat
Morphology
Very numerous (150–250 per rosette), linear-lanceolate, narrow, 40–70 cm long and 1–2.5 cm wide, green to pale glaucous green. Margin with numerous long wavy and curling white filaments that can reach 5–10 cm in length — absolute diagnostic character of the species. Terminal spine 2–4 cm, dark grey.
ecoReddish to yellow-reddish, 5–7 cm long, in a panicle on a scape 3–5 m tall. Monocarpic flowering occurs only once, generally between 10 and 20 years of age. Pollinated by hummingbirds and bats.
ecoAcaulescent to short. The unusually high number of leaves makes the central piña relatively compact. The species is not used for mezcal production.
ecoFibrous and moderately deep to adapt to the rocky soils of Sierra Madre ravines. Tolerate more moisture than agaves from arid lowlands, reflecting the humid mountain climate.
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Requirements
Soil & Substrate
Type
Sandy-loam to stony, well drained with some organic matter
groups Beneficial Associations
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Propagation Strategy
S
T
Every 2–3 years or when roots fill the container. The dense rosette can become unstable in small pots.
One low-dose balanced fertilizer application (10-10-10) in spring and optionally a second light application in summer during active growth.
Uses & Applications
Precautions / Toxicity
Low to moderate. The terminal spine can cause piercing wounds. The numerous marginal filaments are not dangerous but can tangle in clothing. Sap may cause mild irritation.
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Plant Health
Base rot (Phytophthora spp.) if grown with desert agave watering practices (too dry in summer)
Mealybugs (Pseudococcus spp.) — may hide among the filaments
Agave snout weevil (Scyphophorus acupunctatus)
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"Agave multifilifera belongs to the filamentous agave group along with A. filifera and A. schidigera, but is distinguished from all of them by the extraordinary number of leaves and density of filaments. The epithet 'multifilifera' (bearing many filaments) is perfectly descriptive. In cultivation it is crucial to provide adequate drainage but not deprive it entirely of water as one does with desert agaves; in the highlands it receives significant summer rainfall."
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Scientific Integrity
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Sources
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Discussion
Disclaimer
This species record is provided for educational and informational purposes only. Jardín Roca Negra does not guarantee the accuracy or completeness of the data. Content is community-curated and may be subject to revision; it should not replace advice from a qualified botanist. This species may be toxic, invasive, or subject to legal restrictions — verify before handling or cultivating. Jardín Roca Negra accepts no liability for any harm arising from reliance on this information. Images are reproduced under Creative Commons or equivalent free licenses; credits are noted below each image.