Japanese holly

Quercus glauca

Quercus glauca, also known as the Japanese holly, is an evergreen broad-leaved tree that is primarily found in East Asia. This tree is frequently used in gardens due to its attractive foliage and sturdy form.

Growth Characteristics
- Tree Shape: It is a medium-sized tree that can grow up to 10–20 meters tall, and it can also grow in a shrub-like form.
- Leaves: They are oval-shaped with smooth, glossy edges.
- Growing Environment: It thrives in conditions ranging from direct sunlight to partial shade and prefers well-drained soil.

Propagation Methods
- Seed Propagation: Acorns can be collected in the autumn when they ripen and sown directly, or stored at low temperatures and sown in early spring.
- Cuttings: It can be propagated by taking cuttings from semi-furrowed branches during the summer.

Cultivation Methods
- Planting: Select well-draining soil and provide ample space when planting. It is recommended to maintain a planting distance of at least 3–5 meters.
- Watering: Sufficient watering is required, especially during the early growth stages. - Fertilizer: It is recommended to use slow-release fertilizer in the spring.

Uses in the Garden
- Border Tree: Its tall stature and spreading branches make it ideal for use as a border tree.
- Shade Provider: It provides cool shade during the summer, making it suitable for creating resting areas.
- Decorative Value: Its glossy leaves and beautiful shape add visual appeal to the garden.

Important Pests and Control Methods
- Diseases: Although relatively resistant to disease, proper drainage management is necessary to guard against root rot.
- Pests: Pests such as leaf beetles may occur; control them using soapy water or eco-friendly insecticides upon early detection.
- General Care: Prevent pest infestations through periodic pruning and maintaining cleanliness.

Glauca japonica is relatively easy to care for, making it widely suitable for use in gardens or public spaces. With the right environment and care, it will grow into a beautiful tree.

Plant Type
Plant Family	Oak family
Height	15m
Spread
Colors	yellow
Bloom Period	April~May
Water Needs	commonly
Exposure	semi-shaded area
Freezing Resistance	-30°C

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Quercus × mccormickii

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