Knotweed 'Superba'

Persicaria affinis 'Superba'

Knotweed 'Superba' (Persicaria affinis 'Superba') is a perennial herbaceous plant characterized by the following:

Growth Characteristics
- Growth Form: It grows as a low herbaceous plant that covers the ground.
- Height: It grows to approximately 20–30 cm.
- Flowering Period: It blooms mainly from summer to early autumn.
- Flower Color: The flowers initially bloom pink and gradually turn a deep red over time.
- Leaf Color: It has evergreen leaves, which may turn orange or red in the autumn.

Propagation Methods
- Division: It can be propagated by dividing the roots in spring or autumn.
- Seeds: While it can be propagated by seeds, division is the more common method.

Cultivation Methods
- Soil: It prefers well-drained soil. It also thrives in slightly moist environments.
- Sunlight: It grows well in a variety of environments, ranging from partial shade to full sun. - Watering: Water regularly to prevent the area around the roots from becoming too dry.
- Fertilizer: Apply general compound fertilizer in the spring or autumn.

Uses in the Garden
- Border Plant: Excellent for planting along garden borders or walkways.
- Ground Cover: Utilize its ability to quickly cover the ground to use it as a ground cover plant.
- Color Contrast: Seasonal changes in leaf and flower colors can provide color contrast in the garden.

Important Pests and Control Methods
- Diseases: Generally resistant to major diseases, but fungal diseases may occur if humidity is too high.
- Control Methods: Ensure good ventilation and use antifungal agents if necessary.
- Pests: Aphids or snails may occur.
- Control Methods: Wash off aphids with soapy water or use insecticides. Remove snails physically or use special bait.

While Polygonum 'Superba' is a relatively easy plant to care for, it requires proper care in an appropriate environment to grow healthily.

Plant Family	Knotweed family
Height	15~30cm
Spread	30~60cm
Colors	white, red
Bloom Period	July~August
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Polygonum affinis
Persicaria affinis

Water knotweed
Persicaria amphibia