Details of...
Scientific Name: Juniperus horizontalis 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: Glossary
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): No flowers, 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: Abiotic disorder, Beetles or weevils, Blight or needle cast, Caterpillar or cutworm, Heart rot, Leaf miner insect, Mites, Nematodes, Root rot, Rust, Scale insects, ( Deer resistant, Drought resistant )
(BCE) Boulevard (Circular) Eastend
(LTW) Langley Township Walk
(NRY) NuRserY : zone 5
Location Map

Report an Error