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Lycopus coreanus

Lycopus coreanus is a perennial herb native primarily to East Asia, including the Korean Peninsula. The following describes its major growth characteristics, propagation methods, cultivation practices, garden uses, and important pests and control methods.

Growth CharacteristicsIt thrives in moist environments. It typically grows to a height of 30–70 cm, and its leaves are opposite, ovate with pointed tips. Small white or light purple flowers bloom in clusters at the tips of the stems between summer and autumn. Its roots tend to spread horizontally for propagation.

Propagation MethodsIt can be propagated primarily through the separation of root stock or seeds. Seeds fall naturally after maturation, and it is best to sow them in the spring. Separating root stock in early spring or late autumn can promote plant growth.

Cultivation Methods - Soil: Well-drained, moist soil is suitable. 2. Sunlight: It thrives in partial shade and may be damaged in areas with excessively strong sunlight.
 - Watering: Water consistently to prevent the soil from drying out. However, avoid excessive moisture.
 - Fertilizer: Applying slow-release fertilizer once in the spring is sufficient.

Uses in the GardenIt is useful in gardens where wetlands are created or a natural atmosphere is desired. In particular, planting it near water or ponds can create a natural landscape.

Important Pests and Control MethodsAlthough it is relatively resistant to pests, aphids and scale insects may occur. To control them:
- Aphids: Using insecticides made with soapy water or vegetable oil is effective.
- Scale Insects: Remove them by hand upon early detection or prevent them through regular washing with soapy water.

Based on this information, you can cultivate and manage the Korean Spiraea to create various garden designs.

Plant Family	Lamiaceae
Height	30∼100cm
Colors	white
Bloom Period	July to September
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-20°C

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