Spotted knotweed (Persicaria strigosa)

Spotted knotweed

Persicaria strigosa is an annual herb found throughout Africa, Asia, and Australia. It does well in wet soils and often grows in or at the edges of bodies of water. It is notable for its small, delicate pinkish-white flowers.

Scientific classification

Species

Spotted knotweed (Persicaria strigosa)

Pinks, cacti, and allies

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Perennial

Lifespan

White, Pink

Flower Color

Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Spotted knotweed

Distribution of Spotted knotweed

Distribution Map

Spotted knotweed is a plant that exhibits a broad native distribution, flourishing in various regions across South and Southeast Asia, parts of East Africa, and some regions in Southern Africa. While spotted knotweed is primarily indigenous to these areas, it has also been introduced to other regions, including the temperate zones of the Southern Hemisphere, exemplified by its presence in New Zealand.

Native

Cultivated

Invasive

Introduced

No species reported

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Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Spotted knotweed

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Spotted knotweed thrives in humid environments, requiring consistently moist soil. Water weekly to meet hydration needs. As an outdoor plant, it benefits from mulching to retain moisture and replicate its natural habitat's leaf litter.

Fertilize: To keep spotted knotweed healthy, fertilize monthly with a balanced nutrition formula during the growing season. Reduce feeding in autumn and winter. Apply fertilizers on moist soil and avoid leaves to prevent burn. Follow instructions carefully for appropriate dosing.

Pruning: Spotted knotweed features spotted leaves and aggressive growth. Prune in early to late spring by one-third to remove unhealthy stems and promote air circulation, preventing disease. Post-flowering pruning maintains shape and supports future blooms, enhancing overall vigor and aesthetic appeal in garden spaces.

Propagation: Spotted knotweed is propagated by surface sowing seeds in moist, well-drained soil post-frost. Utilizing a propagator aids germination. Thin seedlings for healthier growth and transplant them with sufficient spacing for mature size.

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