Utah Juniper

Juniperus osteosperma

Native to:
United States

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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