Pink knotweed - Persicaria capitata (Care, Characteristics, Flower, Images)

Pink knotweed

Also known as: Pink-headed persicaria, Japanese knotweed

Pink knotweed (Persicaria capitata) is an evergreen perennial plant that grows up to 15 cm tall and 1.5 m long. Pink knotweed grows best in full sun and thrives in a variety of soil conditions. Pink knotweed is often cultivated as ground cover. It is considered an invasive weed in some regions.

Scientific classification

Species

Pink knotweed (Persicaria capitata)

Pinks, cacti, and allies

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Weeds

Weed or not

Perennial

Lifespan

Herb

Plant Type

Late spring, Summer, Fall

Bloom Time

Summer, Fall

Harvest Time

7 mm to 1.8 cm

Flower Size

Brown, Red

Fruit Color

Pink

Flower Color

Red

Stem Color

Deciduous

Leaf type

5 - 35 ℃

Ideal Temperature

Images of Pink knotweed

Distribution of Pink knotweed

Distribution Map

The plant pink knotweed, exhibits a native range spanning several regions in Asia. Additionally, pink knotweed has flourished beyond its indigenous territories, being introduced across parts of North and South America, Europe, Africa, and Oceania. It has also been cultivated beyond its natural distribution, signaling its adaptability and acceptance in varied climates.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Forest, Open lava fields, Roadsides

Hemisphere Trend Curve

Northern

Sorthern

Culture

Garden Use

Pink knotweed is a low-growing creeper and a prolific bloomer. This makes it ideal for front positions in flower beds and borders, or to be used as a flowering ground cover. Pink knotweed thrives between rocks as well, so it can thrive when planted in rock gardens.

Symbolism

Pure affection mountain: you are aspiring,

Interesting Facts

Pink knotweed makes a nice ground cover but spreads easily. In colder climates it can be treated like an annual and will die off when temperatures stay in the freezing zone. However, in warmer climates, this plant can be considered a noxious and invasive weed that crowds out existing plants and can be extremely difficult to eliminate.

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Care Guide for Pink knotweed

Every week

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Pink knotweed thrives in humid environments and prefers consistent moisture, ideally watered weekly. While moderately drought-tolerant, it flourishes with regular hydration and high humidity. Its efficient water retention enables pink knotweed to adapt to temperate climates with varying rainfall patterns.

Fertilize: For optimal growth, pink knotweed requires balanced nutrition fertilizers, switching to high phosphorus during blooming. Fertilize every 4-6 weeks, following label guidelines. In winter, reduce frequency. Apply diluted solutions to prevent root burn, using granules or liquid fertilizer near the base, avoiding foliage contact.

Pruning: Pink knotweed features dense, mat-forming growth with pink flower spikes. Prune in early to late spring to maintain shape, encourage healthy growth, and improve airflow. Techniques include cutting back leggy stems and removing damaged leaves, promoting vigorous flowering and controlling its spreading habit.

Propagation: Pink knotweed propagation involves sowing fresh seeds pressed into damp soil for optimal germination. Provide bright, indirect sunlight and stable conditions. Thin seedlings gently to prevent overcrowding, promoting stronger growth.

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