Details of...
Scientific Name: Juniperus horizontalis (incl. cvs.)
Pronunciation: joo-NIP-ur-us hore-ih-zun-TAY-liss
Common Name: creeping juniper, horizontal juniper
Family Name: Cupressaceae
Plant Type: Conifer, Ground cover
Key ID Features: Low growing, dense evergreen mat, sprawling, with trailing branch tips; leaves scale-like, ' 2 mm long, tightly pressed to stem except when shaded when awl-shaped juvenile leaves 5-10 mm long may occur; seed cones fleshy, berrylike, maturing to bluish-purple, glaucous, up to 8 mm long; pollen cones on separate plants and seed cones on separate plants.
Course(s): Level 1 Apprenticeship, CLT Training, HORT 1155

Habit: Spreading
Form: Creeping / Mat-like
Texture: Fine
Mature Size:
Height:0.2 - 0.4m
Spread:2 - 3m
Growth Rate:Slow
Origin: B.C. east of Cascades, B.C. west of Cascades, Canada - central, Canada - eastern, Canada - northern, U.S. - central, U.S. - northeast, U.S. - northwest, U.S. - southwest
Hardiness Rating: Zone 2: (-46 to -40 C)
Exposure: Full sun
Soil/ Growing Medium: Rocky or gravelly or dry, Well-drained
Water Use: Low
Landscape Uses: Alpine, Erosion control, Filler, Group or mass planting, Mixed shrub border, Reclamation, Rock garden
Additional Info: Google. Cultivars shown or on campus may include J. ‘Wiltonii’ (scale foliage only). Also on campus: J. ‘Blue Chip’. Over 100 cultivars exist and some are more green than bluish-grey.
creeping juniper, horizontal juniper
Leaf Morphology:
Form: Scale-like
Arrangement: Imbricate, Opposite
Texture/ Venation: Prickly
Surfaces: Distinctive smell, Glabrous
Colour in Summer: Bluish, Green
Colour in Fall: Bluish, Green
Leaf(let) Terms:
Shapes: Deltoid, Other
Apices: Acute
Bases: Sheathing
Margins: Entire
Additional Info: scales 1-2 x 1 - 1.5 mm; awl-shaped juvenile leaves 5-10 mm long

Inflorescence Type: n/a (male cone)
Flower Morphology:Dioecious plant
Colour (petals): Male Cone, Brown
Flower Time at Peak: Mar, Apr

Fruit Type: Cone (winged seeds)
Fruit Colour: Blue, (dark blue with pale waxy residue)
Fruiting Time: Sep, Oct
Additional Info: Showy, berry-like, 2 seeded

Bark Morphology: Papery, Exfoliating
Bark or Stem Colour: Red, Brown

Propagation: Seed, Softwood cuttings
Pest Susceptibility: Deer resistant, Drought resistant, Heart rot, Mites, Nematodes, Rust, Scale insects, Leaf miner insect, Blight or needle cast, Beetles or weevils, Abiotic disorder, Caterpillar or cutworm, Root rot
(BCE) Boulevard (Circular) Eastend
(LTW) Langley Township Walk
(NRY) NuRserY : zone 5
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