alder tree

Juglans mandshurica
Juglans mandshurica is a deciduous tall tree native to Korea, China, Russia, and other regions. It has the following growth characteristics, propagation methods, and cultivation methods:

Growth Characteristics
- Height: Mature trees grow up to approximately 25 meters.
- Leaves: They are pinnately compound leaves composed of 7 to 17 leaflets. The leaves are green in summer and turn yellow in autumn.
- Flowering Period: Flowers generally bloom in May. It is unisexual, meaning both male and female flowers exist on the same tree.
- Fruit: Round nuts mature around September.

Propagation Methods
- Seeds: It is primarily propagated by seeds. Seeds collected in autumn are sown immediately, or they are stored in the refrigerator during the winter and sown in the spring.
- Grafting: Grafting is sometimes used to maintain the characteristics of specific varieties.

Cultivation Methods
- Soil: It prefers well-drained and fertile soil. - Sunlight: It thrives in sunny locations.
- Watering: It does not need to be watered too frequently, but provide ample water during dry periods.
- Fertilizer: Apply organic fertilizer in the spring to promote growth.

Uses in the Garden
- Landscape Tree: It is used as a garden tree due to its interesting shape and vibrant autumn leaf colors.
- Shade Provider: Its large leaves provide shade during the summer.
- Soil Improvement: It helps improve soil by fixing nitrogen in its roots.

Important Pests and Control Methods
- Diseases: Leaf blight and root rot may occur. These can be prevented through periodic soil disinfection and ventilation.
- Pests: Damage may occur from greenhouse whiteflies, aphids, and wood borers. Control measures can be taken using appropriate insecticides if necessary. Natural enemies can also be used for biological control.

The Manchurian walnut (Jagnus mandshurika) is a relatively easy-to-care-for ornamental tree that can be utilized for various purposes in the garden. If provided with proper growing conditions and management, it will grow healthily.
Plant Family	Juglandaceae
Height	20m
Colors	red
Bloom Period	April~May
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-40°C
Chilean wine palm
Jubaea chilensis
Walnut tree
Juglans regia