Cupressus macrocarpa
Cupressus macrocarpa · Cupressaceae
📷 Wikimedia Commons · CC BY-SA 3.0
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around cupressus macrocarpa and prepare for winter.
ID card
- Common name
- Lambert Cypress
- Family
- Cupressaceae
- Foliage
- Evergreen
- Mature height
- 8 m (can reach 12 m in optimal conditions)
- Form
- Columnar to pyramidal, very slender
- Growth rate
- Fast
- Hardiness
- Moderate (zones 9 to 10, down to -5 °C)
- Origin
- California, Big Sur coast
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability medium.
Expert tips
The key tip
Macrocarpa cypress fears cold and humidity plus waterlogging. Needs excellent drainage, even dry soil.
The common mistake
Planting it in heavy, moist soil - that's the main reason for decline.
The pro's trick
Before planting, raise the soil 30cm (drainage mound) and pour 20cm of gravel or pumice.
Care
Light Exposure
Lambert Cypress demands full sun to thrive and develop its harmonious shape. It tolerates partial shade but prefers 6 to 8 hours of direct daily sunlight. Plant it in a well-ventilated location, as it appreciates good air circulation.
Watering
During establishment (first year), water regularly to keep the soil moist but well-drained. Once well-rooted, it tolerates moderate drought. Reduce watering in fall and winter to prevent root rot, especially in humid regions.
Soil
Choose well-drained soil, preferably poor to moderately fertile. Lambert Cypress dreads root asphyxiation; slightly alkaline or chalky soil suits it well. Improve drainage with sand or gravel if your soil retains water.
Pruning and Training
Pruning is generally unnecessary if you like its natural form. Remove dead or diseased branches in spring. Avoid severe pruning that would distort its slender silhouette; light interventions are enough to balance it.
Fertilizing
A moderate application of balanced fertilizer in spring is sufficient. On naturally rich soil, fertilizer applications are unnecessary. In containers, diluted fertilizer once monthly from May to August supports growth without excess.
Problems and Diseases
In humid regions, watch for root rot linked to excess moisture. Powdery mildew or scale insects may occur but remain rare in dry climates. Prevent problems through well-drained soil and good air circulation.
Did you know?
Lambert Cypress is endemic to the coastal cliffs of Big Sur in California, where only a few thousand specimens remain in the wild. Its spectacular form, shaped by ocean winds, has made it popular as an ornamental since the nineteenth century, paradoxically contributing to its conservation ex situ while its natural populations remain threatened.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- Giant sequoiaSequoiadendron giganteum
- JuniperJuniperus communis
- Northern WhitecedarThuja occidentalis
- Bald cypressTaxodium distichum
- Lawson cypressChamaecyparis lawsoniana
- Coast redwoodSequoia sempervirens
Tips generated and checked by Viridia — adapt them to your local climate.