Lesser knotweed Persicaria affinis 'Superba' 5-10 pot P9

Size: Potmaat leidend

5-10cm

|

Pot 9x9 cm (P9)

|

Available from: 03/02/2025

Number of m2

Nr. of plants

3.20

3.20 per piece

incl. VAT, excl. shipping costs (calculated in shopping cart)

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Number of m2

Nr. of plants

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Bulk discount!

Pcs Save Price/pc

2+ £3.60

6+ -2.8% £3.50

12+ -5.6% £3.40

24+ -8.3% £3.30

96+ -11.1% £3.20

Benefits according to our specialist

Prevents weeds
Plantable year-round
Low maintenance

Plant features
Description
Planting and care
Packaging and shipping

Genus
Persicaria (view all varieties)

Root type
Pot

Pot size
9x9 cm (P9)

Flowering months
July, August, September

Leaf colour
Red, Pink, White

Possibilities
Border, Group planting, Edge planting

Soil type
All soil types, well-drained

Positioning
Semi-shade, Sun

Winter hardiness
-23,3°C / -20,6°C, USDA zone 6a

Fruit-bearing plants
No

Water needs
Average water

Number of plants per m²
9

Evergreen plants
No

Leaf colour
Green

Fragrant plants
No

Growth habit
Creeping wide-spreading growth habit

Height at time of delivery excluding pot/clod
5-10

Mature height (cm)
25

Art. no.
1000890

Description

Persicaria affinis 'Superba' | Lesser knotweed

Persicaria affinis 'Superba', commonly known as lesser knotweed, is a charming addition to any garden border, thanks to its creeping growth habit and delightful mat-forming foliage. Offering a long flowering period from mid-summer to early autumn, this versatile perennial can create an enchanting ground cover with its vibrant blossoms transitioning from white to pink and red.

Key Features of Persicaria affinis 'Superba'

The Persicaria species is renowned for its ability to thrive in a range of soil conditions, as long as the soil is well-drained.
With its ultimate height reaching a modest 25 cm, the 'Superba' variety is perfect for edge planting, creating a defined and colorful boundary in your garden.
The foliage is semi-evergreen, maintaining a presence with green and bronze tones throughout the year, offering visual interest even in the colder months.
The flowers emerge in summer and remain attractive into autumn, transitioning in color and providing an extended season of interest.

Tips for Cultivating Persicaria affinis 'Superba'

Ensure that the plant receives an adequate amount of water, especially during dry periods, as it does not possess significant drought resistance.
Propagation through division is highly recommended, both to promote health and to expand your growth of this groundcover. Spring or autumn is the optimal time to divide and replant sections.
While 'Superba' prefers sun to partial shade, it is adaptable and can flourish in various locations within your garden, making it a versatile choice for novice and experienced gardeners alike.

Ideal placement of a Persicaria affinis 'Superba'

Persicaria affinis 'Superba' flourishes best in locations that receive full sun to partial shade, ensuring a vibrant display of flowers from midsummer to early autumn. While adaptable to various soil types, well-drained conditions are essential to support its creeping, widespread growth habit. This species is ideal for border embellishments or group plantings where its seasonal transition from green to bronze-toned foliage can be appreciated. Although not drought-resistant, with average water needs, this semi-evergreen plant maintains a verdant presence even in winter, making it a versatile addition to any garden setting.

How do I plant a Persicaria affinis 'Superba'?

For successful establishment, plant Persicaria affinis 'Superba' in well-drained soil of any type, ensuring each specimen has ample room to spread its creeping growth. The ideal planting periods are spring or autumn to allow the root system to become well-established. This species thrives equally in full sun or partial shade, catering to gardeners with varying light conditions. Upon planting, maintain consistent moisture levels in the soil to support the development of the plant and to promote its vibrant summer and autumnal floral display of red, pink, and white hues.

Pruning a Persicaria affinis 'Superba'

Persicaria affinis 'Superba' requires minimal pruning to maintain its health and appearance. It is advisable to trim back the faded flower spikes after blooming to encourage a second flush of flowers and to keep the plant tidy. Additionally, in early spring, any frost-damaged foliage should be cut back to ground level, which will stimulate new growth and ensure the plant retains its lush, ground-covering habit. Pruning is a simple task for this species and does not require extensive effort or time.

Watering a Persicaria affinis 'Superba'

Ensuring that Persicaria affinis 'Superba' receives adequate hydration is essential for its vigorous growth and vibrant flowering display. This species thrives with consistent moisture, especially when situated in areas of full sun exposure. Watering should penetrate the soil deeply to encourage a robust root system, which supports the plant's creeping growth habit. During periods of prolonged dryness, additional irrigation may be necessary to maintain soil moisture levels. Regular watering during the active growing season will help maintain the lush green foliage and support the transition to the characteristic bronze tones as autumn approaches.

Fertilising a Persicaria affinis 'Superba'

To ensure the vigorous growth and prolific flowering of Persicaria affinis 'Superba', it is advisable to fertilize in the spring. A balanced, slow-release fertilizer, applied once at the start of the growing season, will suffice to support the plant's needs throughout its blooming months. The granular fertilizer should be worked gently into the soil around the plant, taking care not to disturb the root system.

The creeping, widespread growth habit of this species means it can cover ground quickly, and adequate nutrition is key to maintaining both its lush foliage and vibrant summer-to-autumn floral display. Due to its semi-evergreen nature, the plant will also benefit from a boost of nutrients as it prepares for the cooler months, helping to sustain its green to bronze foliage through winter.

The characteristics of a Persicaria affinis 'Superba'

One delightful aspect of Persicaria affinis 'Superba' is its ability to adapt to a range of soil conditions, making it a versatile choice for gardeners. The plant's dense mats of foliage not only add lush texture to garden beds but also help in suppressing weeds naturally. Furthermore, its charming spikes of pink flowers transition to a deep, burnished red, providing an extended display of color from summer into the autumn months, which is often an unexpected bonus to its already robust profile.

Separating/dividing a Persicaria affinis 'Superba'

To propagate Persicaria affinis 'Superba' and promote its health, division is recommended. Ideally performed in spring or autumn, this process involves carefully lifting the plant from the soil and separating it into smaller sections. Each section should have a good amount of roots and shoots for successful reestablishment. Replant these divisions promptly, ensuring they are spaced out to accommodate the species' creeping, widespread growth habit. This method not only invigorates the plant, leading to more robust flowering but also helps to control its spread and maintain garden aesthetics.

What will be the height of Persicaria affinis 'Superba'?

Persicaria affinis 'Superba' typically reaches a height ranging from 10 to 50 centimeters when fully mature.

What will be the width of Persicaria affinis 'Superba'?

Persicaria affinis 'Superba' achieves a final spread ranging between 50 centimeters and 1 meter, depending on the growing conditions and care.

Which soil type is most suitable for the Persicaria affinis 'Superba'?

Persicaria affinis 'Superba' is adaptable to various soil types, but it thrives best in well-drained soil. This type of soil allows for proper water drainage, which is essential for the healthy growth of the plant.

What is the ideal positioning for the Persicaria affinis 'Superba'?

The ideal location for Persicaria affinis 'Superba' would be a place where it can receive both sunlight and partial shade. This plant thrives best in an environment where it can benefit from direct sunlight at times and also have periods of partial shade throughout the day.

What is the flowering colour of the Persicaria affinis 'Superba'?

The blossoms of Persicaria affinis 'Superba' display a delightful array of red, pink, and white hues, adding a charming touch to this plant's appearance.

Is the Persicaria affinis 'Superba' hardy?

Persicaria affinis 'Superba' is indeed winter hardy. This plant can tolerate temperatures as low as -23.3°C to -20.1°C, which places it within the USDA zone 6a for winter hardiness. Therefore, Persicaria affinis 'Superba' is well-equipped to thrive during colder seasons, making it suitable for gardens in regions with similar climatic conditions.

Is the Persicaria affinis 'Superba' evergreen?

Persicaria affinis 'Superba' is not an evergreen plant. It is deciduous, shedding its leaves seasonally and growing new ones during the appropriate times of the year.

What is the growth strength of the Persicaria affinis 'Superba'?

Persicaria affinis 'Superba' demonstrates a steady growth pattern, taking between 5 and 10 years to reach its ultimate height. This suggests a gradual and enduring development process for this particular plant.

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