Japanese emperor oak (Quercus dentata)

Japanese emperor oak

Also known as: Daimio oak

The japanese emperor oak is a deciduous tree with very large leaves. It is frequently found in gardens and pruned to keep its appeal. In Japan, the people use the leaves to wrap a sweet treat called Kashiwa mochi during the celebration of Children’s Day.

Scientific classification

Species

Japanese emperor oak (Quercus dentata)

Beeches, walnuts, and allied trees

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Perennial

Lifespan

Tree

Plant Type

Spring, Early summer

Bloom Time

Early fall, Mid fall

Harvest Time

20 m to 25 m

Plant Height

Green, Brown

Stem Color

Deciduous

Leaf type

5 - 32 ℃

Ideal Temperature

Spring

Growth Season

Slow

Growth Rate

Quickly Identify Japanese emperor oak

Distinctive large leaves, up to 12 inches (30 cm) long and 7 inches (18 cm) wide.

Catkin flowers with male clusters reaching 4 inches (10 cm), and small green female flowers.

Acorns without stem, 1/2 to 3/4 inches (1.3 to 1.9 cm) long, with textured caps.

Auriculated leaf bases with wavy margins and hairy, curved stems around 1/2 inch (1.3 cm) long.

Brown, fuzzy mature stems, 0.5 to 1 inch (1.3 to 2.5 cm) thick, with dense branching.

Identify plants with a snap

Instantly identify plants with AI: Snap a photo, and get accurate results within seconds.

Download the App for Free

Care Guide for Japanese emperor oak

Every 2 weeks

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Japanese emperor oak prefers woodland-like environments and is drought-tolerant once established. Water every two weeks, allowing soil to dry slightly. Best grown outdoors, mulching is beneficial to retain moisture and simulate natural leaf litter.

Fertilize: Japanese emperor oak requires balanced fertilizers in spring and high nitrogen in fall for healthy growth. Apply monthly in spring and summer, bi-monthly in autumn, ensuring even distribution to prevent root burn. Adjust feeding with seasons to optimize nutrient uptake and support japanese emperor oak's lifecycle stages.

Pruning: Japanese emperor oak thrives with early spring pruning, removing dead branches and thinning crowds for air circulation. Regular pruning maintains health and prevents damage, using clean, sharp tools for precise cuts while adhering to best practices for large deciduous trees.

Propagation: Japanese emperor oak propagates through sowing; stratification of acorns enhances germination. Transplant seedlings into well-draining soil for root growth while minimizing disturbance. Regular watering and partial sunlight support healthy development before moving to a permanent location.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free