Devil's needle

Bidens bipinnata

Bidens bipinnata is an annual plant belonging to the Asteraceae family, possessing diverse growth characteristics and propagation methods.
 - Growth Characteristics:

Bidens bipinnata thrives primarily in warm climates and grows well in sunny locations. It grows to a height of approximately 30 to 90 cm, and its leaves are deeply lobed in a feather-like pattern. It bears small yellow flowers, and the flowering period typically runs from summer to autumn.
 - Propagation Methods:

It is primarily propagated by seeds. The seeds have small thorns that allow them to easily attach to animals or human clothing, facilitating dispersal.
 - Cultivation Methods:
- Soil: It grows well in well-drained soil.
- Watering: Water periodically in a well-drained environment, but avoid overwatering.
- Sunlight: Ensuring sufficient sunlight is important. 4. Use in the Garden:

Bidens pilosa can be used as a ground cover plant, and it is also valuable as an ornamental plant after flowering. It is also suitable for creating a natural atmosphere.
 - Major Pests and Control Methods:
- Diseases: Bidens pilosa is relatively resistant to diseases, but there is a possibility of root rot occurring under conditions of excessive moisture. Proper drainage management is important.
- Pests: Common pests include aphids and insects; if necessary, they can be controlled using organic insecticides.

You can grow Bidens pilosa healthily through proper cultivation methods and soil management.

Plant Type
Plant Family	Asteraceae
Height	25~85cm
Spread
Colors	yellow
Bloom Period	August~September
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-15°C

Devil's needle
Bidens biternata

Eye-shaped snake
Bidens tripartita var. repens