Persicaria microcephala 'Red Dragon'PBR
knotweed 'Red Dragon'
'Red Dragon' is a vigorous, spreading perennial with lance-shaped, purplish-green leaves with a bold central splash of purple bordered by a silver chevron marking, and rounded clusters of tiny white flowers in late summer and autumn
Buy this plant
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Grey Silver Purple | |||
|---|---|---|---|---|
| Summer | White | Green Grey Silver Purple | ||
| Autumn | White | Green Grey Silver Purple | ||
| Winter | Green Grey Silver Purple |
Position
- Full sun
- Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H5Botanical details
- Family
- Polygonaceae
- Native to the UK
- No
- Foliage
- Semi evergreen
- Habit
- Trailing
- Genus
Persicaria can be annuals, herbaceous or evergreen perennials or sub-shrubs with simple leaves and small bell-shaped white or pink flowers in long-lasting spikes or panicles
- Name status
Accepted
How to grow
Cultivation
Grow in moist soil in sun or part-shade. Dense groundcover, spreading less quickly than the species
Propagation
Propagate by stem tip cuttings or by division
Suggested planting locations and garden types
- Coastal
- Cottage and informal garden
- Banks and slopes
- Flower borders and beds
- Ground cover
Pruning
Cut back in autumn
Pests
Usually trouble free
Diseases
Usually trouble free
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.