Japanese cedar
Cryptomeria japonica
Elegans
About this plant
Cryptomeria japonica, commonly known as Japanese cedar, is a tall evergreen tree native to Japan. It has soft, needle-like foliage that turns bronze in winter and reddish-brown bark that peels in strips. This tree is often used in gardens and parks for its graceful shape and attractive appearance. It grows well as a specimen tree or in groups and is valued for its timber as well.
Taxonomy
- Genus
- Cryptomeria
- Family
- Cupressaceae
- Higher classification
- Order Pinales
- Plant type
- Tree
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Japan
- Distribution
- Native to Japan; widely cultivated in temperate regions worldwide including parts of North America, Europe, and Asia.
Care
- Light preference
- Partial sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, Southeast-facing, Southwest-facing
- Watering frequency
- Moderate
- Watering interval
- 5–10 days
- Humidity
- Normal
- Minimum
- -20 °C
- Maximum
- 35 °C
- Optimal
- 10-25 °C
- USDA hardiness zones
- 5-9
- Soil pH
- 5.5-6.5 (slightly acidic to neutral)
- Soil type
- well-draining loam, sandy soil
Watering. Water regularly during dry periods, especially for young trees. Established trees tolerate some drought but prefer consistent moisture without waterlogging.
Fertilizing. Apply a balanced, slow-release fertilizer in early spring to support healthy growth. Avoid over-fertilizing, which can cause excessive, weak growth.
Cryptomeria japonica is a hardy evergreen tree that prefers well-drained soil and can tolerate a range of light conditions from full sun to partial shade. It requires moderate watering and benefits from occasional fertilizing. It is generally low-maintenance but may need pruning to maintain shape.
Propagation
- Propagation methods
- Seeds, Cuttings
- Care difficulty
- Medium
Ornamental features
- Flowering
- No
Soft, feathery evergreen foliage that changes color in winter; attractive reddish-brown peeling bark; conical form.
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 have around children and animals.
Allergy information
- Allergy risk
- Moderate
- Allergy triggers
- Pollen
- Pollen level
- Moderate
Cryptomeria japonica produces pollen that can cause allergic reactions in sensitive individuals, especially during its pollen season. People with pollen allergies may experience sneezing, runny nose, or itchy eyes. To reduce exposure, avoid being near the tree when it is releasing pollen and keep windows closed during high pollen times.
Common problems
Problems can include root rot if overwatered or planted in poorly drained soil. Pests are usually not a major issue, but watch for spider mites or scale insects. Lack of sunlight can cause poor growth.
Uses
Used as an ornamental tree in gardens and parks; also valued for timber production and windbreaks.
Notes
Prune in late winter or early spring to shape the tree and remove dead branches. Repotting is not applicable as it is usually grown outdoors. It is sensitive to waterlogged soil, so ensure good drainage.