How to Grow Lawson Cypress

Lawson Cypress

Chamaecyparis lawsoniana

tree

Lawson Cypress is a tall, evergreen coniferous tree native to northwestern North America, characterized by soft, feathery foliage and a narrow, columnar form. It can grow 40-60 feet tall in ideal conditions and features small, scale-like leaves arranged in flattened sprays with a pleasant citrus-like aroma when crushed. This ornamental tree is widely cultivated for timber and landscaping in temperate regions worldwide.

Looking for a specific variety?

Elwoodii Columnaris Pembury Blue Wissel's Saguaro Stewartii Boulevard

Growing Conditions

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Sun: Full sun to partial shade; 6+ hours of direct sunlight preferred for best form and color; afternoon shade beneficial in hot climates

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Water: Moderate to high water needs; prefers consistently moist but not waterlogged soil. Young trees require regular watering (1-1.5 inches weekly during growing season). Drought stress can cause foliage discoloration and dieback. Avoid letting roots dry out completely.

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Spacing: 60-120 (depending on mature variety width; larger cultivars need 8-10 feet spacing) inches

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Days to maturity: Slow-growing; reaches landscape maturity in 10-20 years

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Planting depth: Plant at same depth as root ball; do not bury trunk. Top of root ball should be level with or slightly above soil surface

Soil

Type: Well-draining, moist loamy or sandy soil

pH: 5.5-7.0

Amendments:

Peat moss or coco coir for moisture retention Perlite or coarse sand for drainage Compost for organic matter Mulch (2-3 inches) to maintain soil moisture and temperature

Growing Zones

Find your zone →

Thrives in zones 5b-9a; prefers cooler climates with consistent moisture

5b 6a 6b 7a 7b 8a 8b 9a

Growth Stages

Establishment (Year 1)

12 months

Young transplant or seedling with delicate foliage, minimal growth as energy focuses on root development

Water regularly to keep soil consistently moist. Avoid fertilizing; protect from wind and extreme heat. Stake if necessary for support. Mulch base generously.

Juvenile Growth (Years 2-5)

4 years

Tree establishes stronger root system and begins steady height and width growth; foliage becomes denser and more robust

Maintain consistent moisture during growing season. Prune only to remove dead wood or improve shape. Begin light fertilization with balanced, slow-release formula. Monitor for pests.

Developmental (Years 6-15)

10 years

Tree grows vigorously, reaching substantial height and developing characteristic columnar or conical form depending on cultivar

Continue regular watering in dry periods. Prune selectively to maintain desired shape, making cuts before new growth hardens. Apply balanced fertilizer annually in spring.

Mature Growth (Years 15+)

Long-term maintenance

Tree reaches full height potential (40-60 feet depending on variety), foliage is dense and richly colored with pronounced form

Reduce pruning to maintenance only. Water during extended droughts. Watch for disease and pest issues. Remove lower branches if desired for landscape aesthetics.

Companion Planting

Plan your garden →

Plant with:

Rhododendron Azalea Heather Japanese maple Hosta Fern Camellia Pieris

Avoid planting near:

Black walnut (produces toxic juglone) Dense shade-producing trees that would suppress lower light needs Plants requiring dry soil conditions

Common Pests

Spray with water to dislodge; apply horticultural oil or neem oil if severe. Increase humidity around tree. More common in hot, dry conditions.
Hand-pick and destroy bags in late fall or early spring. Apply Bacillus thuringiensis (Bt) in summer when caterpillars are active.
Apply horticultural oil in late winter or early spring before new growth. Prune heavily infested branches. Beneficial insects like ladybugs help control.
Prune out infected branches well below visible symptoms. Sanitize pruning tools with bleach between cuts. Improve air circulation. Provide good drainage and avoid overhead watering.
Ensure well-draining soil and avoid waterlogging. Improve drainage with amendments. Remove tree if severely affected; fungicide treatments are generally ineffective.

Uses

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Timber and Construction

Household

Lawson Cypress wood is soft, fine-grained, highly durable, and naturally resistant to rot and insects. It has been widely used for lumber, shingles, exterior siding, fencing, boat building, and interior finishing for over a century. [source]

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Ornamental Landscaping

Craft

Prized as a specimen tree for its elegant form, rich color variations (from blue-green to golden in cultivars), and narrow profile that fits small spaces. Popular in formal gardens, hedgerows, and windbreaks. [source]

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Essential Oil Production

Household

Foliage yields aromatic essential oil with citrus and woody notes. The oil has been historically used in perfumery and as a mild aromatherapy agent. [source]

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Wildlife Habitat

Wildlife

Provides shelter and nesting sites for birds and small mammals. The dense foliage offers protection from predators and weather, and the structure serves as a windbreak. [source]

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Culinary Flavoring

Culinary

In some regions, the tender foliage has been brewed as a mild herbal tea with citrus undertones, though this use is uncommon and should be verified for safety. [source]

Harvest Tips

Not harvested like food crops. For timber operations, mature trees (40+ years) can be felled in late fall or winter. For ornamental purposes, prune selectively in late winter to early spring before new growth emerges; never cut beyond green foliage into bare wood, as the tree may not recover.

Fun Facts

🌱 Lawson Cypress is native only to a small region in southwestern Oregon and northwestern California, making it a rare tree in its native habitat but widely cultivated globally.
🌱 Over 200 cultivars have been developed, ranging from dwarf shrubs (1-2 feet) to full-size trees, with foliage colors including blue, gold, silver, and bronze, offering enormous variety for gardeners.
🌱 The tree's aromatic foliage smells distinctly of fresh lemon and resin when brushed, which is why it's sometimes called 'Lemon Cypress' in horticultural circles.

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