Knotweed 'Superba'

Persicaria bistorta 'Superba'

Growth Characteristics

Persicaria bistorta 'Superba' is a perennial herbaceous plant that typically grows to a height of 60–90 cm. It features long, oval leaves and brightens up gardens with pink flowers blooming from spring through summer. It prefers humid environments and thrives in partial shade.

Propagation Methods

Persicaria bistorta 'Superba' is primarily propagated by seeds or root division. For seed propagation, sowing in spring or autumn is recommended, while root division is best done before new shoots emerge in spring or in autumn.

Cultivation Methods
 - Soil Preparation: It grows well in well-drained soil that retains moisture. A soil pH ranging from neutral to slightly acidic is suitable.
 - Planting: Plant at intervals of approximately 30 cm. After planting, water thoroughly to keep the soil moist.
 - Maintenance: Water regularly to prevent the soil from drying out and manage the environment to prevent weed growth. It is recommended to provide appropriate fertilizer during the spring growing season to ensure nutrient supply.

Uses in the Garden
Polygonum 'Superba' is suitable for areas around ponds or in moist garden zones. It blends well with other flowering plants to create a natural look and is also excellent for planting in clusters.

Important Pests and Control Methods
Polygonum 'Superba' is generally a hardy plant, but it can rarely be damaged by pests such as aphids or snails.
- Aphids: When infested, they can be controlled using soapy water or refined oil.
- Snails: Remove them using physical methods or utilize natural predators for ecological control.

Regarding diseases, fungal diseases caused by excessive moisture may occur, so it is important to manage moisture thoroughly and ensure good ventilation.

Plant Family	Knotweed family
Height	60~90cm
Spread	30~60cm
Colors	pink
Bloom Period	May to August
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Polygonum atrosanguinia
Persicaria amplexicaulis 'Atrosanguinea'

Polygonum 'Taurus'
Persicaria amplexicaulis 'Taurus'