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Chamaecyparis lawsoniana ‘Howarths Gold’

Lawson cypress

Garden

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  • Chamaecyparis lawsoniana ‘Howarths Gold’ | Copyright Greenplantswap 2018

Features

  • Blooms & FruitsMarch & September
  • Height10m
  • Growth HabitUpright conical
  • Leaf ColourGold-green

Description

Chamaecyparis lawsoniana ‘Howarths Gold’ (Lawson cypress). This is a tall conical tree with pendulous branches native to the humid coastal forests of northwestern USA. Foliage is an attractive bluish to deep green. Planted trees can reach 40 m tall with trunks approx 1.2 m in diameter. It is the parent of many cultivars of any other conifer species. The fast growing bigger varieties will remove nutrients and moisture from the soil around their base, block out sunlight and may well irritate neighbours if planted as boundary hedges.

Characteristics

Woody perennial, Evergreen, Fragrant

Origin

North western USA

Interest and use

Hedging, specimen. Year-round interest.

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  • Chamaecyparis lawsoniana ‘Howarths Gold’ | Copyright Greenplantswap 2018

Needs

  • LightPart shade
  • HardinessFully hardy (min -15°C)
  • SoilClay, Chalky
  • Soil pH7.0
  • WaterSemi-moist

Cultivation

They are tolerant of chalky soils but grow best in moist but well drained neutral to slightly acid soil. If the conifer produces more than one leader, to maintain the general conical habit remove all but one leader. To restrict the height of the plant, the leader can be cut back.

Propagation

Propagate by seed sown in autumn or spring (but forms selected for leaf colour do not come true). Evergreen current growth cuttings in autumn to spring. Deciduous softwood cuttings in summer.

Pests, diseases or disorders

Aphids, honey fungus may be a problem where young plants are more susceptible.

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