Persicaria filiformis
A clump-forming, deciduous perennial to 1.4m, with attractive ovate yellow-green leaves with dark red blotches and upright spikes of airy coral-red flowers on dark stems appearing from summer through until the autumn. Suitable for the middle of a flower border
Size
Ultimate height
1–1.5 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 | Yellow Green Red | |||
|---|---|---|---|---|
| Summer | Red | Yellow Green Red | ||
| Autumn | Red | Yellow Green Red | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Polygonaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- 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
Correct
How to grow
Cultivation
Grow in moisture-retentive but well-drained soil in full sun or partial shade
Propagation
Propagate by division in spring or autumn
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Flower borders and beds
Pruning
Cut back old, flowered stems to the ground in autumn
Pests
Generally pest-free but may be susceptible to slugs and snails
Diseases
Generally disease-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.