Persicaria vacciniifolia - Knotweed
Persicaria vacciniifolia - Knotweed
Persicaria vacciniifolia
Cranberry Knotweed, Vaccinium-leaved Knotweed
Parcel received 36 hours after ordering. Thanks to Gwendoline for the packaging, young plants impeccable and still moist when unpacked. A good sign for a flowering in the spring.
DENIS, 16/10/2021
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Description
The Creeping Knotweed or Persicaria vacciniifolia is a small creeping perennial that is quite attractive for planting at the base of trees or in fresh rockeries. Its lovely dense foliage is vibrant green and glossy. It thrives in partial shade and adds colour in autumn with its reddish-brown hues. Its numerous spikes proudly stand throughout the summer, displaying a beautiful pink colour and reddish stems. Hardy and easy to grow, it thrives in moist and rich soil.
Also known as Bilberry-leaved Knotweed, this Persicaria belongs to the Polygonaceae family. It gets its nickname from its numerous small elliptical leaves (1-2 cm (0-1in)) with acute tips. These leathery leaves, with their vibrant green colour, change hues in autumn, turning from red to brown. Very shiny on the upper surface, they capture every ray of sunlight. They are borne on beautiful reddish woody and highly branched stems. Creeping, they spread over an area that can reach up to 50 cm (20in) in diameter. From the beginning of summer, they are topped with spikes measuring 3 to 7 cm (1 to 3in) long, composed of multiple small flowers clustered together. Initially red in bud, they reveal a delicate pink when they bloom. The plant then reaches a height of about twenty centimetres.
Persicaria vacciniifolia prefers moist and rich substrates and thrives in partial shade. It can tolerate a sunny exposure if the soil does not dry out or if the nights remain humid.
Along the edge of a fresh flowerbed, in a woodland or at the base of a watered wall, this Creeping Knotweed offers a beautiful brightness with its glossy foliage and its flowering in vibrant and soft hues. Resistant, low-maintenance, and vigorous, it finds its place in mild to cool climates where it brings a long-lasting beautiful flowering and a natural style.
Persicaria vacciniifolia - Knotweed in pictures
Flowering
Foliage
Plant habit
Botanical data
Persicaria
vacciniifolia
Polygonaceae
Cranberry Knotweed, Vaccinium-leaved Knotweed
Cultivar or hybrid
Planting and care
Persicaria vacciniifolia thrives in cool and rich soil. Therefore, you should plant this perennial in spring or autumn in a fresh rockery, at the edge of a well-watered flower bed, or on the edge of a woodland. It also finds its place at the base of trees and bushes if the substrate remains moist. It prefers partial shade, but can also adapt to a sunny exposure that is not too scorching or drying. It is not afraid of the cold and its foliage can be semi-evergreen depending on the temperatures.
In favorable conditions, it develops vigorously and sometimes needs to be limited. Occasionally, it is necessary to intervene to slow down the progression of the roots.
A winter or late winter cleanup allows for the removal of faded stems.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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