Oneseed Juniper

Juniperus monosperma

Native to:
Mexico, United States

📍 View on iNaturalist →

Taxonomy

Division:
Coniferophyta | - Conifers
Family:
Cupressaceae
Genus:
Juniperus
Species:
Juniperus monosperma
USDA Symbol:
JUMO

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
700 cm
Light Requirements:
Part Shade
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

Periploca funebris

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fragrant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts poorly after fire; primarily regenerates from seed. Fire typically kills mature trees, but the species colonizes post-fire landscapes.

Soil Requirements

Soil Type:
rocky, well-drained, nutrient-poor soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
commonly found in arid, semi-desert regions

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 stratification followed by cold. Germination is often erratic and may take over a year.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Scarify, then cold-moist stratify for 60 days.

Source: Claude AI