Thin-leaved Korean Spiraea

Philadelphus tenuifolius

Philadelphus tenuifolius, scientific name: Philadelphus tenuifolius, is a deciduous shrub native to Korea, Japan, China, and other regions. The following is information regarding this plant's growth characteristics, propagation methods, cultivation methods, garden uses, major pests and diseases, and control methods.

Growth Characteristics
- Underground Structure: It is a shrub with thin leaves and sturdy branches, capable of growing to a height of approximately 1 to 2 meters.
- Leaves: The leaves are narrow and elongated oval-shaped, with smooth or irregularly serrated margins.
- Flowers: White flowers bloom between May and June and have a very strong fragrance. The flowers have four petals and bloom in clusters at the tips of branches.

Propagation Methods
- Seeds: It can be propagated by seeds, and sowing in the spring is suitable.
- Cuttings: It can be propagated during the summer using semi-hardwood cuttings. Roots will develop if planted in well-drained soil. Cultivation Method
- Soil: Soil with good aeration and drainage is suitable.
- Sunlight: It requires sufficient sunlight, but can also grow in partial shade.
- Watering: Water periodically during dry periods, but be careful not to overwater.

Garden Use
- Landscaping: It can be used as a hedge or boundary tree in the garden. Its beautiful flowers make it suitable for ornamental purposes as well.
- Fragrance: The flowers have a very pleasant scent, so it is also good to plant it in spaces where one can enjoy the fragrance.

Important Pests and Diseases & Control Methods
- Diseases: It is relatively resistant to diseases, but root rot can occur due to excessive moisture. It is important to maintain well-drained soil.
- Pests: Aphids may appear on the leaves; in this case, they can be controlled using soapy water or commercial insecticides.

This plant is relatively easy to care for, making it excellent for garden use. If you manage it to grow well in the appropriate location and conditions, you can enjoy its fragrant flowers and beautiful leaves.

Plant Type
Plant Family	Saxifragaceae
Height	1~3m
Spread
Colors	white
Bloom Period	April~May
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-15°C

Phellodendron amurense
Phellodendron amurense

Korean ash tree
Philadelphus schrenkii