Atlantic White Cypress (Chamaecyparis thyoides)

Atlantic White Cypress

Chamaecyparis thyoides

Its feathery foliage carries a soft, resinous scent. Evergreen coniferous tree; common name: Atlantic white cedar.

Full sun
variable/week
Moderate
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Plant Needs

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Sunlight Prefers full sun to partial shade; tolerates coastal wind and salt spray
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Watering Tolerates saturated, standing water; drought-intolerant once established
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Temperature Hardy to USDA zones 4–8; withstands cold winters and warm coastal summers
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Characteristics

  • Leaf: Scale-like, overlapping, flattened sprays; blue-green to dark green foliage with resinous glands.
  • Cone: Small globose brown female cones (6–10 mm diameter); tiny yellowish male cones.
  • Stem/Bark: Reddish-brown fibrous bark that peels in vertical strips.
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Care Guide

Watering

Maintain consistent soil moisture; avoid drying out completely

Fertilization

Diluted acidic fertilizer once monthly. Use slow-release acidic fertilizer to support foliage color and growth

Composted coffee grounds:Mix fully composted grounds into topsoil to lower pH and add trace nutrients; avoid raw grounds to prevent mold
Pruning
  • Remove dead or damaged branches in late winter before new growth emerges
  • Thin dense foliage to improve airflow and reduce pest risk
  • Shape young trees to maintain desired pyramidal form; avoid heavy pruning of mature specimens
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic; no harmful effects on cats

Humans: Non-toxic to humans; no known adverse effects from ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental tree for windbreaks and wetland restoration; wood used historically for boatbuilding and shingles