Utah Juniper

Juniperus osteosperma

Cupressaceae · conifer · introduced

Quick Facts

Height

15–30 ft

Growth Rate

Slow

Light

Full Sun

Soil

Well Drained

Water

Low

Hardiness

Zone Zones 3a–8b

Bloom Time

Mar 1-Mar 31

Origin

North America

Phenological Calendar

Stage	Typical Window	What to Look For
New growth flush BBCH 11	Feb 15-Mar 15	Lighter-colored new growth visible at branch tips
Bloom start BBCH 61	Mar 1-Mar 31	First open flowers visible; flowers yellow
Bloom end / petal fall BBCH 69	Apr 1-Apr 15	Last petals falling; flower structures fading
Fruit/seed development BBCH 71	Jun 1-Aug 31	Fruit or seed structures forming; fruit color: blue
Fruit/seed maturity BBCH 85	Sep 1-Nov 30	Fruit fully colored and ripened; seed dispersal may begin

Diseases (12)

Thekopsora minima and Naohidemyces vaccinii Rust

Phytophthora spp. (P Phytophthora Root Rot

Diaporthe vaccinii Phomopsis Twig Blight

Magnesium Deficiency

Canker and Dieback

Pear Trellis Rust

Armillaria ostoyae Armillaria Root Rot

Phoradendron villosum Mistletoe (a True Mistletoe)

Seiridium Canker

Diaporthe vaccinii Twig Blight

Taphrina wiesneri Witches' Broom

Pests (10)

Carulaspis juniperi Juniper scale

Oligonychus ununguis Spruce spider mite

Various families Leafminer

Dichomeris marginella Juniper webworm

Juniper tip midge

Cypress tip moth

Cinara occidentalis, Cinara abietis Aphid

Cylindrocopturus furnissi Root weevil

Tetranychidae Spider mite

Cypress tip moth and allies