Utah Juniper
Juniperus osteosperma
Cupressaceae · coniferous tree · native
Last updated
Quick Facts
Height
15–30 ft
Growth Rate
Slow
Light
Full Sun
Soil
Well Drained
Water
Low
Hardiness
Zone Zones 3a–8b
Origin
North America
Watch for this season
RustHigh
Aecial Stage (Alternate Host)
Armillaria Root RotModerate
Active Below-ground Growth
Phytophthora Root RotModerate
Growing Season Stress Expression
AphidModerate
Spring Colonization
+ 2 more — see full disease and pest lists below
Phenological Calendar
| Stage | Typical Window |
|---|---|
| New growth flush BBCH 11 | Feb 15-Mar 15 |
| Pollen release BBCH 61 | Mar 1-Mar 31 |
| Pollen shed complete BBCH 69 | Apr 1-Apr 15 |
| Berry-like cone development BBCH 71 | Jun 1-Aug 31 |
| Berry-like cone maturity BBCH 85 | Sep 1-Nov 30 |
Diseases: Regionally Documented (11)
Multiple genera (Melampsoridium, Thekopsora, Naohidemyces... Rust Phytophthora spp. (P Phytophthora Root Rot Phomopsis Twig Blight Magnesium Deficiency Canker and Dieback Pear Trellis Rust Armillaria spp. — primarily A Armillaria Root Rot Symptom category — not a single disease Leaf Blight Phoradendron villosum Mistletoe (a True Mistletoe) Seiridium cardinale Seiridium Canker Taphrina wiesneri Witches' Broom
Pests: Regionally Documented (10)
Carulaspis juniperi Juniper scale Oligonychus ununguis Spruce spider mite Various (Agromyzidae, Gracillariidae, Tenthredinidae) Leafminer Juniper fall-webworm Oligotrophus betheli Juniper tip midge Argyresthia cupressella Cypress tip moth Aphidoidea Aphid Otiorhynchus spp. Root weevil Tetranychidae Spider mite Argyresthia spp. Cypress tip moth and allies
Data Maturity Structured Multiple sources. Expert review underway.