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Choose your climateBased on winter hardiness only.

Tree · Cupressaceae family

Port Orford cedar

Chamaecyparis lawsoniana

Full sun to part shade in a garden 4 ft 11 in–8 ft 2⅜ in × 1 ft 11⅝ in–6 ft 6¾ in to −73 °F

In short a 10-second read

SunFull sun to part shade
in a garden after 10 years4 ft 11 in–8 ft 2⅜ in
in the wild up to 131.2 ft
spacing 26 ft 3 in
PlantingMarch–April, September–October
WinterNo winter protection

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in average to moist soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

acidic to neutral soil
acidicneutralalkaline
average to moistloamyhumus-rich

Watering

only in dry spellsdrought tolerant once establishedless when it rains

Frost

−73 °F
no winter protectiongreen in winter too

How much space it takes

Mature size.

The mature plant next to a person (69 in).

3 ft 3⅜ in6 ft 6¾ in9 ft 10⅛ in13 ft 1½ in16 ft 4⅞ in19 ft 8¼ in22 ft 11⅝ in26 ft 3 in29 ft 6⅜ in32.8 ft36.1 ft39.4 ft42.7 ft45.9 ft49.2 ft52.5 ft55.8 ft59.1 ft62.3 ft65.6 ft68.9 ft72.2 ft75.5 ft78.7 ft82 ft85.3 ft88.6 ft91.9 ft95.1 ft98.4 ft101.7 ft105 ft108.3 ft111.5 ft114.8 ft118.1 ft121.4 ft124.7 ft128 ft131.2 ft49.2 ft–131.2 ftspread 26 ft 3 in–57.4 ft
49.2 ft–131.2 ft× spread 26 ft 3 in–57.4 ft

Plant 26 ft 3 in apart.

Reaches maturity in about 20–50 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Typical for a temperate climate (four seasons). The line shows the current month.

The year at a glance

Planting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberFeeding: JanuaryFeeding: FebruaryFeeding: MarchFeeding: AprilFeeding: MayFeeding: JuneFeeding: JulyFeeding: AugustFeeding: SeptemberFeeding: OctoberFeeding: NovemberFeeding: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
PlantingFeeding
Now, in October: a good time for planting (container plant, root-balled).
JanFebMarAprMayJunJulAugSepOctNovDec

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–April, September–October; root-balled: March–April, September–October

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

May–June

Feeding

Nutrition.

Horn meal

up to 0.18 oz/sq ft a year, if the soil needs it · May–June

JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

High riskMedium riskLow riskRisk for this plant according to the source · no label = no documented level

Phytophthora root rot

Medium riskdiseasesource covers the whole genus
More about this problem

What you will see

Dieback of branches without cankers, mainly on young plants in wet, poorly drained soil.

The source says: it is among the plants commonly affected by Phytophthora.

How to protect

  1. Prevention
    • Plant in free-draining soil; avoid waterlogging.
    • Keep watering right.
  2. By hand spring – summerImprove drainage; remove heavily affected plants.
Phytophthora root rotdiseaseMedium risk

What you will see

Dieback of branches without cankers, mainly on young plants in wet, poorly drained soil.

The source says: it is among the plants commonly affected by Phytophthora.

How to protect

  1. Prevention
    • Plant in free-draining soil; avoid waterlogging.
    • Keep watering right.
  2. By hand spring – summerImprove drainage; remove heavily affected plants.
More about this problem

Cypress canker

Low riskdiseasesource covers the whole genus
More about this problem

What you will see

Branches or tips turn yellow and brown. Sunken reddish cankers with resin ooze, the wood beneath is reddish-brown. The whole plant may gradually die.

The source says: the fungus only occasionally damages it.

How to protect

  1. Prevention
    • Do not plant in drought and stress; allow sufficient spacing and good drainage.
    • Disinfect tools; spores spread on tools, by water and wind, and on planting material.
    • Choose less susceptible species.
  2. By hand all year, in dry weatherCut back affected branches to healthy wood and disinfect the cuts. Fungicides are generally ineffective.
Cypress cankerdiseaseLow risk

What you will see

Branches or tips turn yellow and brown. Sunken reddish cankers with resin ooze, the wood beneath is reddish-brown. The whole plant may gradually die.

The source says: the fungus only occasionally damages it.

How to protect

  1. Prevention
    • Do not plant in drought and stress; allow sufficient spacing and good drainage.
    • Disinfect tools; spores spread on tools, by water and wind, and on planting material.
    • Choose less susceptible species.
  2. By hand all year, in dry weatherCut back affected branches to healthy wood and disinfect the cuts. Fungicides are generally ineffective.
More about this problem
Sources (4)

Frequently asked

Quick answers.

Does Port Orford cedar tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does Port Orford cedar need?

At maturity 26 ft 3 in–57.4 ft wide and 49.2 ft–131.2 ft tall; recommended spacing 26 ft 3 in.

Cypress canker — what can you do?

Do not plant in drought and stress; allow sufficient spacing and good drainage. Cut back affected branches to healthy wood and disinfect the cuts. Fungicides are generally ineffective.

Phytophthora root rot — what can you do?

Plant in free-draining soil; avoid waterlogging. Improve drainage; remove heavily affected plants.

Sources (14) Checked 24 October 2026

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