Utah Juniper
Juniperus osteosperma
- Native to:
- United States
Fcb981






Taxonomy
- Division:
- Coniferophyta | - Conifers
- Family:
- Cupressaceae
- Genus:
- Juniperus
- Species:
- Juniperus osteosperma
- USDA Symbol:
- JUOS
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Tree
- Height:
- 900 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Landscaping Shrub:
- Yes
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
Lithophane longior, Sequoia sphinx (Sphinx sequoiae), Siva Hairstreak (Mitoura siva)
Reported Fauna Sightings
Butterflies:Juniper Hairstreak (Callophrys gryneus)
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Deer Resistant:
- Yes
- Fragrant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Generally killed by fire but can resprout from the root crown in younger trees. Mature trees are fire-sensitive with thin bark.
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:
- Common in arid, desert-like environments
Propagation & Germination
- Stratification:
- Warm then cold/moist stratification (double dormancy) — 90–120 days
- Germination Time:
- 30–120 days
- Notes:
- Seeds have double dormancy requiring warm followed by cold stratification. Germination can be erratic over one to two years.
The above propagation data sourced from Claude AI
Pre-treatment: Seeds are placed in cold moist stratification for 98 days. Scarification techniques are also being examined, followed by warm stratification and then cold stratification.
Establishment: The protocols suggest different pre-treatment methods, with one suggesting cold moist stratification for 98 days and the other examining scarification techniques followed by warm and then cold stratification. The exact effectiveness of these methods is not provided.
Source: npn.rngr.net