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Trees

Juniperus communis 'Sentinel'

juniper 'Sentinel'

A slow growing, strongly upright, narrow, flame-shaped shrub or small tree with dense blue-green foliage. Similar to 'Compressa' but faster growing.

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Ultimate height

1–1.5 metres

Time to ultimate height

5–10 years

Ultimate spread

0.5–1 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or West–facing

Exposure

Exposed or Sheltered

Drought resistance

Yes

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Cupressaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Columnar upright
Potentially harmful: Skin allergen, wear gloves and other protective equipment when handling
Genus: Juniperus can be prostrate or erect, evergreen shrubs or trees with aromatic, scale-like or sharply pointed awl-shaped leaves, and small globose fruits
Name status: Accepted

How to grow

Cultivation

Grow in any well-drained soil, including dry, chalky or sandy soils, preferably in full sun or in light dappled shade. See tree cultivation

Propagation

Propagate by semi-hardwood cuttings in early autumn

Suggested planting locations and garden types

Cottage and informal garden
City and courtyard gardens
Architectural
Rock garden
Low Maintenance
Hedging and screens
Flower borders and beds

Pruning

See pruning group 1

Pests

May be susceptible to aphids, scale insects, conifer red spider mite and caterpillars

Diseases

May be susceptible to phytophthora, canker and honey fungus. See also Conifers: brown patches

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