Suwon ash tree

Populus tremula var. glandulosa

Populus glandulosa, also known as the Suwon Populus, is a species native to East Asia, including Korea. It possesses the following growth characteristics and cultivation information:

Growth Characteristics
- Environment: It generally thrives in moist soil and can grow in both full sun and partial shade.
- Height: Mature trees can reach approximately 30 meters in height and have an upright tree shape.
- Leaves: The oval leaves turn yellow in the autumn.
- Growth Rate: It exhibits a fast growth rate, with rapid growth possible particularly during the seedling stage.

Propagation Methods
- Seed Propagation: Seeds harvested from mature trees in the autumn should be sown in the following spring after the winter.
- Cuttings: Cutting branches for propagation is also an effective method; rooting tends to be better when performed in the spring.

Cultivation Methods
- Soil: It grows well in fertile, well-drained soil. - Water Management: Water should be provided sufficiently during the initial establishment period; after maturity, it can be sustained solely by natural precipitation.
- Fertilizer: Once mature, it grows well without special fertilizers, but if necessary, it is recommended to apply organic fertilizer in the spring.

Uses in Gardens
- Suwon Poplar is widely used for landscaping purposes, and is particularly useful as a street tree or windbreak. It is relatively resistant to pests and diseases, making it easy to manage.

Important Pests and Control Methods
- Diseases: While disease occurrence is relatively rare, leaf blight may occur infrequently. In this case, remove infected leaves and apply an appropriate pesticide.
- Pests: Pests such as leaf beetles may appear; it is best to catch them early or control them using organic insecticides.
- Control Methods: To prevent infestation, plant trees at appropriate intervals to ensure good ventilation and maintain cleanliness by removing weeds.

Suwon Poplar is a highly popular tree for landscaping because it provides shade and moisture and grows quickly.

Plant Type
Plant Family	Willow family
Height	10~20m
Spread
Colors	Green, brown
Bloom Period	April~May
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

ironwood
Populus suaveolens

Italian Poplar
Populus × canadensis