Oriental Arbor-vitae
Platycladus orientalis · Cupressaceae
📷 yeowatzup at Flickr · CC BY 2.0
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around oriental arbor-vitae and prepare for winter.
ID card
- Foliage
- Evergreen, flattened scales light green to golden
- Form
- Columnar, pyramidal or shrubby conifer depending on variety
- Mature size
- 5 m in height, 1 to 2 m in width
- Growth
- Moderate to slow
- Hardiness
- Very hardy, down to -20 °C
- Origin
- Arid regions of Central and Eastern Asia
- Soil type
- Well-draining soil, tolerates chalky and poor soils
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Oriental arborvitae tolerates dry conditions once established but hates stagnant winter moisture: plant on a mound or in very well-draining soil. Low-maintenance once it gets going.
The common mistake
Watering a young arborvitae too often or planting it in a depression: winter humidity causes the heartwood and roots to rot.
The pro's trick
Do a light cleanup in March by thinning out dead interior branches with a soft garden fork: this aeration slows down the fungal diseases that degrade this conifer.
Care
Watering
Oriental Arborvitae is very drought-resistant once established. During the first three years, water regularly (once or twice weekly) during the growing season. Afterward, watering during prolonged dry spells is sufficient. Avoid standing water that promotes root rot.
Light exposure
Plant in full sun to achieve dense growth and optimal color. At least 6 to 8 hours of direct daily sunlight are recommended. In very hot and arid areas, light afternoon shade can be beneficial.
Soil
Prefer well-draining and dry soil. Oriental Arborvitae tolerates chalky, rocky, and even nutrient-poor soils. Improve drainage by adding sand or gravel if the soil is too clayey.
Pruning and shaping
Light pruning can be done in spring or late summer to maintain shape. Avoid severe pruning that leaves bare patches. Remove dead wood and diseased branches without hesitation.
Fertilizer
No regular feeding is necessary on established soil. A balanced fertilizer application in spring can support growth during the first years after planting, but use restraint.
Diseases and pests
Oriental Arborvitae is generally robust. Watch for excess moisture (root rot, rust). In case of spider mite or insect attack, a spray of water or sulfur-based solutions may suffice.
Did you know?
Oriental Arborvitae, called 'Biota orientalis' in China, is sacred in Asian tradition and has been planted for millennia near temples and tombs. In Central Asia, it symbolizes longevity and wisdom, with its seeds used in traditional medicine. Its highly fragrant and durable wood has long been prized for construction and spice chests.
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.
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Tips generated and checked by Viridia — adapt them to your local climate.