Nakdong Nasamal

Vallisneria spinulosa

Vallisneria spinulosa is an aquatic plant that grows underwater and is primarily found in rivers, lakes, and ponds. This plant provides a hiding place for swimming fish and contributes to water purification.

Growth Characteristics
- Habitat: Prefers clear water and soft muddy bottoms.
- Growth Rate: Can grow rapidly if conditions such as temperature and sunlight are right.
- Temperature: Grows well within a temperature range of 15 to 30 degrees Celsius.
- Sunlight: Grows healthier with more sunlight.

Propagation Methods
- Seed Propagation: Propagates naturally through seeds that germinate underwater.
- Vegetative Propagation: Uses a method where rhizomes spread sideways to produce new shoots.

Cultivation Methods
- Planting: Plant the roots about 10 cm underwater and ensure they receive sufficient light.
- Water Management: Maintain clean water; it is recommended to change the water about once a week. - Nutrient Supply: Provide nutrients by supplying fertilizers specifically designed for aquatic plants.

Uses in the Garden
- Decorative Effect: Planting it in aquariums or ponds can beautify the aquatic environment.
- Oxygen Supply: It supplies oxygen to the water through photosynthesis, creating an ecosystem favorable to fish.

Important Pests and Control Methods
- Diseases: Root rot; the plant may become sensitive to diseases if water quality deteriorates.
- Control: Regularly change the water and keep it clean.
- Pests: It may be attacked by pests such as freshwater snails.
- Control: If pests increase, they can be physically removed or pesticides can be used.

With proper care and the right environment, Nakdong Nasamang grows beautifully in the garden and offers ecological benefits.

Plant Type
Plant Family	Water hyacinth family
Height	30~80cm
Spread
Colors	white
Bloom Period	July to October
Water Needs	well
Exposure	Sunny
Freezing Resistance	-5°C

Screw
Vallisneria natans

Nasal Americana
Vallisneria americana