Western Juniper

Juniperus grandis

Taxonomy

Division:
Coniferophyta | - Conifers
Family:
Cupressaceae
Genus:
Juniperus
Species:
Juniperus grandis

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Tree
Height:
More than 40 ft
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
mar, apr, may
Bloom Colors:
Blue, Black

Native Range

United States: California, Nevada

Keystone Species Ranking

Caterpillar Keystone:
★★☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)

Host Plant for Caterpillars

Abagrotis glenni, Lithophane longior, Semiothisa sp., Sequoia sphinx (Sphinx sequoiae), 🛑Barry's hairstreak (Mitoura barryi), Siva Hairstreak (Mitoura siva)

Soil Requirements

Soil Type:
rocky, well-drained, nutrient-poor soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
Commonly found in mountainous regions

Germination Information

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 90 days.

Source: OpenAI GPT-4o