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Chamaecyparis lawsoniana 'Silver Threads' (v)

Lawson's cypress 'Silver Threads'

A dwarf conifer forming a dense, columnar or conical tree to 1.5m in 10 years. The upright branches bear flattened sprays of grey-green foliage with large, creamy-white flecks

Synonyms

Chamaecyparis lawsoniana 'Ellwood's Silver Threads'

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Ultimate height

1–1.5 metres

Time to ultimate height

10–20 years

Ultimate spread

0.5–1 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing or East–facing

Exposure

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
Genus: Chamaecyparis are evergreen trees, usually of narrowly ovoid or columnar outline, with much-branched sprays of small scale-like leaves, and small, globose cones; tiny red male cones are conspicuous in a few cultivars
Name status: Accepted

How to grow

Cultivation

Tolerant of chalky soils but best in a moist but well-drained, preferably neutral to slightly acidic soil in sun

Propagation

Propagate by semi-ripe cuttings

Suggested planting locations and garden types

Architectural
City and courtyard gardens
Low Maintenance
Hedging and screens

Pruning

Trim hedging from late spring to early autumn; do not cut into old wood

Pests

May be susceptible to aphids, juniper scale and shoot-boring moths

Diseases

May be susceptible to honey fungus and Phytophthora root diseases

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