Persicaria longiseta
Persicaria longiseta · Polygonaceae
The gardener's calendar
Ideal time to plant persicaria longiseta: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Polygonaceae
- Type
- Annual or perennial herbaceous plant depending on climate
- Adult height
- 40 to 80 cm
- Foliage
- Deciduous, medium green
- Flowering
- July to October, pink or reddish flowers
- Hardiness
- Low hardiness, grow as annual in temperate climates
- Origin
- South and Southeast Asia
- Growth
- Fast
Care
Light exposure
Place the long-bristled bistorta in a sunny or partially shaded location. It appreciates direct light for at least 4 to 5 hours per day for abundant flowering. In very hot climates, light afternoon shade can be beneficial.
Watering
Keep the soil consistently moist but not waterlogged during the growing season. Water regularly during dry periods, especially in pots. Reduce watering in winter if the plant persists. Prefer morning watering to prevent fungal diseases.
Soil
Grow this plant in rich, light, and well-draining potting soil. A mixture of leaf mold with some coarse sand works well. It tolerates slightly acidic to neutral soils and appreciates abundant organic matter.
Fertilizer
Apply balanced fertilizer every 3 to 4 weeks during the growing period (spring-summer). Reduce or stop applications in autumn-winter. Fertilizer rich in potassium promotes better flowering.
Pruning and maintenance
Pinch young stems in spring to encourage more compact branching. Remove faded flowers regularly to extend flowering. At the end of the season, you can cut back the plant to 10-15 cm from the ground.
Diseases and pests
Watch for excessive moisture that can promote powdery mildew or rot. Indoors or in confined atmospheres, spider mites can sometimes appear. Ensure good air circulation and avoid foliage watering late in the day.
Did you know?
The long-bristled bistorta owes its scientific name 'longiseta' to the delicate long bristles that adorn its flower clusters. Although little known in Western Europe, it has been cultivated for a long time in South Asia, where its close relatives are used both in gastronomy and in traditional phytotherapy.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- SorrelRumex acetosa
- Pink knotweedPersicaria capitata
- Mile-a-minute vineFallopia baldschuanica
- RhubarbRheum rhabarbarum
- Maidenhair vineMuehlenbeckia complexa
- Red bistortBistorta amplexicaulis
Tips generated and checked by Viridia — adapt them to your local climate.