Overview
Juniperus occidentalis is a bushy, columnar upright, matforming, trailing tree in the genus Juniperus, part of the Cupressaceae family, with evergreen foliage. Juniperus occidentalis grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H7. Suggested uses include coastal, cottage and informal garden, wildlife gardens and low maintenance.
About
Juniperus occidentalis, known as the western juniper, is a shrub or tree native to the Western United States, growing in mountains at altitudes of 800–3,000 meters (2,600–9,800 ft) and rarely down to 100 m (330 ft). It is listed as Least Concern on the IUCN Red List because it is a widespread species with an increasing population. Grow it in full sun and partial shade and most soil types. In UK gardens it is fully hardy throughout the UK (RHS H7). It works well for coastal, cottage and informal garden, wildlife gardens and low maintenance. It tolerates soil of any pH, well-drained conditions and south-facing, west-facing and east-facing aspects. Plant in well-drained soil in sun or partial shade.
Wikipedia contributors, CC BY-SA 4.0 — Juniperus occidentalis
About the genus
Junipers are coniferous trees and shrubs in the genus Juniperus of the cypress family Cupressaceae. Depending on the taxonomy, between 50 and 67 species of junipers are widely distributed throughout the Northern Hemisphere as far south as tropical Africa, as far north as the Arctic, and parts of Asia and Central America. The highest-known juniper forest occurs at an altitude of 4,900 metres (16,100 ft) in southeastern Tibet and the northern Himalayas, creating one of the highest tree lines on earth.
Wikipedia contributors, "Juniper", CC BY-SA 4.0 — Juniper
Growing conditions
Best soil and position for Juniperus
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
Juniperus occidentalis size, habit and characteristics
- Plant type
- Tree
- Habit
- Bushy, Columnar upright, Matforming, Trailing
- Foliage
- Evergreen
- Suggested uses
- Coastal, Cottage and informal garden, Wildlife gardens, Low Maintenance
Care notes
Pruning and caring for Juniperus occidentalis
- Propagation
- Seed, Semi-ripe cuttings in early autumn
- Pest resistance
- Aphids, Juniper scale, Caterpillars
- Disease resistance
- Phytophthora, Canker, Honey fungus
Frequently asked questions
Where is the best place to plant Juniperus occidentalis?
Juniperus occidentalis prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Juniperus occidentalis need?
Juniperus occidentalis is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays well-drained.
Is Juniperus occidentalis hardy in the UK?
Juniperus occidentalis has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Juniperus occidentalis?
Seed, Semi-ripe cuttings in early autumn.
More in the Juniperus genus
- Juniperus recurva 'Embley Park'Himalayan Juniper
- Juniperus sabina 'Musgrave'Savin Juniper
- Juniperus scopulorum 'Blue Arrow'Rocky Mountain juniper 'Blue Arrow'
