Japanese Zelkova
Zelkova serrata
A medium to large deciduous tree known for its vase-shaped habit and attractive exfoliating bark. Leaves are alternate, simple, and ovate with sharply serrated margins.
- Light
- Full sun (6+ hours per day) for optimal growth and fall color.
- Water
- Moderate; requires regular watering during its first few years. Becomes drought-tolerant once mature but benefits from occasional deep watering during dry spells.
- Growth
- Deciduous tree with a rapid growth rate when young. Reaches a mature height of 50-80 feet and a similar spread with a distinctive upward-branching, vase-like form.
Care instructions
Plant in a location with full sun and well-draining soil. Water regularly until established; once mature, it is quite drought-tolerant. Prune in late winter or early spring to maintain its vase shape.
Growing details
Sunlight
Full sun (6+ hours per day) for optimal growth and fall color.
Watering
Moderate; requires regular watering during its first few years. Becomes drought-tolerant once mature but benefits from occasional deep watering during dry spells.
Soil
Adaptable to various soil types including clay or loam, but prefers moist, well-draining soil with a pH of 6.0 to 7.5.
Hardiness zone
5 to 8
Growth habit
Deciduous tree with a rapid growth rate when young. Reaches a mature height of 50-80 feet and a similar spread with a distinctive upward-branching, vase-like form.
Bloom season
Spring; flowers are small, green, and non-showy, appearing with the new leaves.
Propagation
Most commonly propagated by seed or by grafting onto seedling rootstocks. Softwood cuttings can also be used in early summer.
Common pests & issues
Generally resistant to Dutch Elm Disease. May occasionally be affected by scale insects, Japanese beetles, or leaf spot, but usually lacks serious pest problems.
Similar species
American Elm (Ulmus americana) - the Zelkova has smoother, exfoliating bark and more pointed leaf serrations; Chinese Elm (Ulmus parvifolia) - has smaller leaves and different bark patterns.