Lawson cypress
Chamaecyparis lawsoniana
Alumii
About this plant
Chamaecyparis lawsoniana, commonly known as Lawson cypress, is an evergreen conifer with soft, feathery foliage that can range from bright green to bluish-green. It is valued for its attractive, dense growth and is often used in gardens and parks as a specimen tree or for hedging. It grows tall and narrow, making it suitable for smaller spaces. The wood is also prized for its durability and fragrance.
Taxonomy
- Genus
- Chamaecyparis
- Family
- Cupressaceae
- Higher classification
- Order: Pinales
- Plant type
- Tree
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Oregon, Washington (USA)
- Distribution
- Native to the Pacific Northwest of the United States, it is now widely cultivated in temperate regions around the world.
Care
- Light preference
- Partial sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- East-facing, South-facing
- Watering frequency
- Moderate
- Watering interval
- 5–10 days
- Humidity
- Normal
- Minimum
- -20 °C
- Maximum
- 30 °C
- Optimal
- 10-24 °C
- USDA hardiness zones
- 6-9
- Soil pH
- 5.5-7.0 (slightly acidic to neutral)
- Soil type
- well-draining loam, sandy soil
Watering. Water regularly during dry periods, especially for young plants. Allow the soil to dry slightly between watering to prevent root rot.
Fertilizing. Feed in early spring with a balanced, slow-release fertilizer to support healthy growth. Avoid over-fertilizing, which can harm the plant.
This plant is fairly hardy and can tolerate a range of light conditions from partial shade to full sun. It prefers well-drained soil and regular watering but does not like to be waterlogged. Occasional pruning helps maintain its shape and health.
Propagation
- Propagation methods
- Seeds, Cuttings
- Care difficulty
- Medium
Ornamental features
- Flowering
- No
Soft, scale-like foliage with a pleasant blue-green color; dense, conical form; attractive bark that peels in strips.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Non-toxic to humans and pets. Safe to plant around children and animals.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Pollen, Skin contact
- Pollen level
- Moderate
Chamaecyparis lawsoniana can produce pollen that may cause mild allergic reactions in sensitive individuals, especially during its pollen season. People with pollen allergies should avoid close contact during this time to reduce symptoms like sneezing or itchy eyes.
Common problems
If overwatered, the roots may rot. Poor drainage or too much shade can cause yellowing needles. Pests like spider mites or aphids may occasionally appear.
Uses
Primarily used as an ornamental tree in gardens and parks, for hedges, and windbreaks. Its wood is also valued in woodworking.
Notes
Prune lightly after the growing season to maintain shape. Repotting is rarely needed as it is usually grown outdoors. Protect young plants from strong winds.