Alligator Juniper
Juniperus deppeana
- Native to:
- Mexico, United States
Kretyen at Flickr (www.flickr.com)






Taxonomy
- Division:
- Coniferophyta | - Conifers
- Family:
- Cupressaceae
- Genus:
- Juniperus
- Species:
- Juniperus deppeana
- USDA Symbol:
- JUDE2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub , Tree
- Height:
- 1500 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
Wildlife Benefits
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★★☆ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
Doll's sphinx (Sphinx dollii), Oiketicus sp., Periploca atrata
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Deer Resistant:
- Yes
- Fragrant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Mature trees can survive low-intensity surface fires due to thick bark. Seedlings and saplings are fire-sensitive. Fire exclusion has allowed expansion into grasslands.
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- pH:
- 6.0 - 8.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- commonly found in mountainous regions
Propagation & Germination
- Stratification:
- Warm then cold/moist stratification (double dormancy) — 90–120 days
- Germination Time:
- 30–90 days
- Notes:
- Seeds have double dormancy requiring warm stratification followed by cold stratification. Germination can be erratic over 1-2 years.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 90 days.
Notes: Seeds may require light for germination.
Source: Claude AI