Ganghwal

Angelica reflexa

Ostericum praeteritum is a perennial herbaceous plant native to Korea that grows primarily in moist areas of mountainous regions.

Growth Characteristics
- Ecology: Ostericum praeteritum is mainly found in mountainous areas and requires sufficient sunlight and adequate moisture.
- Size: Mature plants typically grow up to 1 to 1.5 meters tall.
- Leaves: The leaves are feather-shaped and dark green.
- Flowers: Small white flowers bloom in corymbs during the summer.

Propagation Methods
- Seeds: Seed sowing is the most common method of propagation and is done in spring or autumn.
- Division: Dividing the plant's roots is also a possible method. This is usually done in early spring.

Cultivation Methods
- Soil: It prefers well-drained soil, and soil rich in organic matter is ideal.
- Watering: Maintain moderate moisture but avoid excessive watering.
- Fertilization: Apply slow-release fertilizer in early spring or before flowering.

Uses in the Garden
- Landscape Creation: Due to its beautiful leaves and flowers, it is suitable for ornamental use in the garden. It is particularly well-suited for gardens that create a natural landscape.
- Medicinal Properties: It is also used as a medicinal herb in some traditional Korean medicines.

Important Pests and Control Methods
- Diseases: Aphids and fungal diseases may occur.
- Control: Aphids can be managed with soapy water or garden insect sprays. For fungal diseases, improve ventilation, avoid excessive moisture, and use fungicides if necessary.
- Pests: Snails and other vining pests may gnaw on the leaves.
- Control: Install traps or barriers to deter snails, and use pest control products.

Angelica dahurica is a valuable plant in the garden due to its beauty and diverse uses. It can be kept healthy through proper care and pest control.

Plant Type
Plant Family	Apiaceae
Height	2m
Spread
Colors	white
Bloom Period	August~September
Water Needs	commonly
Exposure	semi-shaded area
Freezing Resistance	-15°C

Osteospermum '4D Berry White'
Osteospermum ecklonis '4D Berry White'

Mountain water parsley
Ostericum sieboldii