broad-leaved tiger's tail

Bistorta officinalis

Growth Characteristics of Polygonum bistoria

Polygonum bistoria is a perennial herbaceous plant that grows to a height of approximately 30 to 60 cm. The leaves are long oval-shaped and arranged in a compound leaf pattern. The flowers are pink and bloom between spring and summer. This plant prefers a humid environment and thrives in moderately fertile soil.

Propagation Methods

Polygonum bistoria is primarily propagated by seeds or root division. For seed propagation, seeds must be sown in the spring, and germination takes about 2 to 3 weeks. Root division involves digging up the plant in spring or autumn, dividing the roots, and replanting them.

Cultivation Methods
 - Soil Preparation: Well-draining soil is preferred. It is recommended to improve drainage by mixing sand into general garden soil.
 - Planting: Seeds are sown in the spring, while root division is performed in the spring or autumn. 3. Watering: Water sufficiently in the early stages and take care to prevent the soil from drying out. However, avoid excessive moisture.
 - Fertilization: It is best to apply fertilizer during the spring when growth is vigorous. Use slow-release fertilizers to provide nutrients.

Uses in the Garden
Vistria japonica is a suitable plant for flower bed borders or wetland gardens. It is popular as an ornamental plant due to its beautiful pink flowers, and it pairs well with other herbaceous plants to enrich the landscape.

Important Pests and Control Methods
- Diseases: Vistoria japonica is relatively resistant to diseases, but fungal diseases may occasionally occur. To prevent this, grow it in a well-ventilated environment and immediately remove infected leaves.
- Pests: Pests such as aphids may occur. These pests can be controlled by lightly washing them off with water or using organic insecticides.

You can grow healthy Vistoria japonica through consistent care and providing a suitable environment.

Plant Type
Plant Family	Knotweed family
Height	50~90cm
Spread
Colors	pink
Bloom Period	April to July
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-10°C

knotweed
Polygonum equisetiforme

Large jade knotweed
Polygonum bellardii