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Persicaria microcephala Red Dragon - Knotweed

Persicaria microcephala Red Dragon
Small-head Knotweed, Knotweed, Persian Knotweed

37 reviews
4,6/5
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Plan in good shape.

Francesca, 05/12/2022

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This plant carries a 12 months recovery warranty

More information

Value-for-money
Stunning perennial, cultivated for its surprising brown-purple foliage, maculate with an inverted V, silver-white.
Flower size
2 cm
Height at maturity
80 cm
Spread at maturity
50 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Recommended planting time February to April, September to October
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Flowering time July to August
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Description

The Persicaria microcephala Red Dragon is a magnificent perennial, cultivated not for its small white spike flowers, but for its surprising brown-purple foliage, maculated with an upside-down V, black highlighted with silver.

 

Its large fleshy stems of brown-purple colour are first upright in spring, then gracefully arch to form a 80cm (32in) to 1m (3ft) tall habit. This vine-plant, mainly grown for its foliage and decorative habit, is magnificent mixed with heucheras, Carex elata Aurea, Lysimachia puncata or perennial geraniums.

Easy to grow and very hardy, Persicaria Red Dragon likes sun or partial shade and enjoys the freshness and even the humidity of heavy and rich soil.

Persicaria microcephala Red Dragon - Knotweed in pictures

Persicaria microcephala Red Dragon - Knotweed (Foliage) Foliage

Flowering

Flower colour white
Flowering time July to August
Inflorescence Cluster
Flower size 2 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour purple

Plant habit

Height at maturity 80 cm
Spread at maturity 50 cm
Growth rate fast

Botanical data

Genus

Persicaria

Species

microcephala

Cultivar

Red Dragon

Family

Polygonaceae

Other common names

Small-head Knotweed, Knotweed, Persian Knotweed

Origin

Cultivar or hybrid

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Planting and care

Plant the Polygonum in a sunny or partially shaded location. In a rich and moist clay soil. Easy to cultivate.

Planting period

Recommended planting time February to April, September to October

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Container, Slope
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, heavy, rich and fresh

Care

Pruning No pruning necessary
Overwinter Can be left in the ground
4,6/5

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