Agave parryi Engelm.
Parry's agave
Agave parryi is one of the most cold-hardy species in the genus, making it particularly valuable for gardens in temperate and continental climates where other succulents would not survive. It forms a compact, symmetrical rosette of glaucous (silver-blue to grey) leaves 30–60 cm long with well-defined brown marginal teeth and a robust, dark apical spine. Native to the montane grasslands and pine-oak scrub of northwestern Mexico and the southwestern United States, it can tolerate prolonged frosts to −20 °C when the substrate is well-drained. Its candelabra inflorescence of 3–6 m with yellow-orange flowers is a natural spectacle of the first order.
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Overview
| Category | Classification |
|---|---|
| Family | Asparagaceae |
| Genus | Agave |
| Growth Habit | Compact medium-sized monocarpic rosette; produces basal offsets moderately |
| Conservation Status | Least Concern (LC) — stable though localized populations; some varieties under pressure from grassland loss |
| pH Target | 6.5 – 8.0 |
| Type | Stony or sandy, well-drained; tolerates neutral to slightly alkaline pH |
Origin & Habitat
Morphology
Obovate to lanceolate, glaucous (silver-blue), 30–60 cm × 8–15 cm; margins with brown corneous teeth 4–8 mm, well-spaced; robust black terminal spine 2–4 cm.
ecoYellow-orange with red tints externally, tubular, 5–7 cm, grouped in large branches on a panicle 3–6 m tall. Spring flowering lasting 2–3 weeks.
ecoShort, compact caudex; rarely forms a visible trunk, remaining as a ground-level rosette throughout its vegetative life.
ecoFibrous root system of moderate reach, very tolerant of summer drought and cold, dry winters.
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Requirements
Soil & Substrate
Type
Stony or sandy, well-drained; tolerates neutral to slightly alkaline pH
groups Beneficial Associations
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Propagation Strategy
- 1 Separate offsets 8–15 cm using thick gloves due to spines
- 2 Allow cut to callous in a dry location for 3–5 days
- 3 Plant in very free-draining substrate with 50% sand or grit
- 4 Water lightly the first week; then establish sparse watering regimen
Can be planted directly in the ground in climates with dry winters; avoid waterlogging at all costs
Planting in clay or poorly drained soil: guarantees plant loss in winter
Every 3–5 years
Once in spring with low-nitrogen cactus fertilizer
Uses & Applications
Precautions / Toxicity
Very sharp terminal spines capable of causing penetrating wounds. Corneous marginal teeth. Sap with saponins irritating to the skin.
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Plant Health
Agave weevil (Scyphophorus acupunctatus) — the most destructive insect of the genus; no effective cure once inside
Root rot from insufficient drainage during wet winter
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"It is probably the most widely grown agave in central and northern European climates due to its exceptional cold hardiness. The var. truncata has shorter, wider leaves with a highly contrasting grey-blue mark; var. huachucensis is larger and more robust."
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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.