Juniperus squamata
Singleseed Juniper, Flaky Juniper
Cupressaceae
ExpandHabitat
- native to western China
- zone 4
- species not commonly cultivated
Habit and Form
- evergreen shrub
- habit is highly variable from an upright shrub to a prostrate dwarf
- most commonly a low growing shrub
- less than a foot to 25' tall
- slow to moderate growth rate
- medium texture
Summer Foliage
- needles are awl-like, with no scale-like leaves
- closely pressed to stem and overlapping
- arranged in whorls of 3
- needles are curves and pointed
- gray-green color
- old needles persist on stem
Autumn Foliage
- evergreen
- needles have a bronze or purple cast during cold months
Flowers
- dioecious or monoecious
- male flowers are yellow and female are green
Fruit
- elliptical cones
- 0.25" to 0.33" in diameter
- change from a reddish brown to almost black color when mature
Bark
- reddish brown coloring
- exfoliates in thin flakes, often quite dramatically
- only a significant ornamental feature on old specimens with a large, upright form
Culture
- easily transplanted
- tolerant of most conditions
- pH adaptable
- not tolerant of high humidity and heat
- full sun
Landscape Use
- specimen, possibly
- groundcover
- screen
- mass plantings
- container
- hedges
- foundation plantings
Liabilities
- susceptible to bagworm
- held dead needles can be unattractive
ID Features
- awl-shaped needles
- blue needle color
- branches erect even if low growing cultivar
- needles found in whorls of 3
- black mature fruits
- needle tips pointed
- dead needles persist
- exfoliating, shredded red-brown bark
Propagation
- by cuttings for cultivars
Cultivars/Varieties
'Blue Carpet' - This ground-hugging form develops into a dense carpet of silver-blue foliage. It reaches 1' tall and 4' wide and is a sport of 'Meyeri'.
'Blue Star' - A branch sport of 'Meyeri', this low rounded plant has increased in popularity over the past decade. It retains its bright blue foliage all year and forms a tight mound 3' tall and wide. The plant can also be trained as a standard to form a small tree, as seen below.
'Meyeri' - This is an old, common form which becomes a bushy, upright plant to 8' tall and narrower in width. The foliage is a bright blue, but the plant may discolor in winter and it retains unsightly dead needles with age. 'Golden Flash' and 'Gold Tip' are variegated sports with yellowish areas.
'Prostrata' - A slow-growing, ground-hugging plant, this selection grows under 1' tall and mounds in the center. The foliage is green with bluish bands on top.