Water alder

Alnus incana subsp. hirsuta

Alnus incana subsp. hirsuta is a deciduous tree that thrives primarily in moist environments and is distributed across East Asia, including Korea.

Growth Characteristics- Light Requirements: It prefers sunlight but can grow well in partial shade.
- Soil: It grows well in moist soil and prefers fertile, well-drained soil.
- Moisture: As it requires moisture, it needs sufficient water supply periodically.

Propagation Methods- Seed Propagation: Collect seeds in the autumn, store them during the winter, and sow them in the spring. It is recommended to sow after cold stratification to increase germination rates.
- Cuttings: It can also be propagated by cutting newly grown branches in the summer.

Cultivation Methods- Planting Time: It is best to plant in early spring or autumn.
- Planting Location: It is suitable for planting in moist areas, such as along riverbanks or around ponds. - Care: During the initial growth period, you must remove weeds and provide sufficient water.

Uses in the Garden- Ornamental Value: Alders are popular as ornamental plants due to their unique leaves and bark.
- Ecological Value: They are beneficial for soil stabilization and are excellent plants for wetland restoration.

Important Pests and Control Methods- Diseases: Leaf blight and root rot may occur. To prevent this, plant in a well-ventilated location and immediately remove any diseased parts.
- Pests: Pests such as wood borers may occur. Using appropriate pesticides is effective.
- Integrated Management: To maintain a healthy tree, it is recommended to prune regularly and apply fertilizer appropriately as needed.

Based on this information, we hope you manage your Alder effectively and utilize it in your garden.

Plant Type
Plant Family	Betula family
Height	6~20m
Spread
Colors	brown
Bloom Period	april
Water Needs	commonly
Exposure	semi-shaded area
Freezing Resistance	-30°C

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