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Guía de plantas

Bristly lady's thumb.

Persicaria longiseta

Pronunciación per-si-KAIR-ee-uh lon-ji-SEE-tuh

También se conoce como Asiatic smartweed, Asiatic waterpepper, Bristly Lady's Thumb, Oriental Lady's Thumb, Oriental Smartweed, bristled knotweed, bristly lady's-thumb, bunchy knotweed

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This hardy plant is a common sight in damp, disturbed areas. It produces lovely spikes of pink flowers that add a nice touch to your garden. You will find it is quite adaptable to different soil conditions.

De un vistazo

Nivel de cuidados
Fácil
Tipo de planta
Annual herb
Luz
Full sun to partial shade
Luz en interior
Luz indirecta brillante
Riego
Cada 2 a 4 días
Tamaño adulto
1 to 2 feet
Ritmo de crecimiento
Rápido
Rusticidad
USDA 5 a 9
Floración
Mid summer to late autumn

Cuidados

Keep the soil consistently moist to mimic its natural damp habitat. Watch for wilting if the soil dries out too much. It is a vigorous grower so keep an eye on it to make sure it does not crowd out other plants.

Riego
Keep the soil damp at all times.
Abonado
Use a balanced liquid fertilizer during the active growing season.
Poda
Trim back spent flower spikes to encourage more blooms.
Trasplante
Since it is an annual, you will typically replace it each season.
Suelo
Moist, fertile soil
pH del suelo
Neutral to slightly acidic
Temperatura
-10 a 35°C
Humedad
40 a 80%

Seguridad

Personas
There are no reports of significant toxicity to humans.
Niños
The small seeds and stems pose a minor choking hazard if ingested by small children.
Alérgenos por contacto
The stems can cause mild skin irritation in sensitive individuals.
Alérgenos en el aire
Pollen may cause mild reactions in those prone to seasonal allergies.
Comestibilidad
This plant is not considered edible and should not be consumed.

Cómo identificarla

  • Pink flower spikes
  • Bristly leaf sheaths
  • Lance shaped green leaves
  • Reddish stems
  • Small dark seeds
Altura
0,2 a 0,6m
Anchura
0,3 a 0,9m
Hojas
green, deciduous
Flores
pink, magenta, 0,5 a 1cm
Frutos
black, Autumn

Problemas frecuentes

  • Aphids — Small insects that cluster on new growth and suck plant sap.

Cómo cultivarla

Propagación
seed
Cuándo plantar
spring

Pair this plant with other moisture loving species to create a lush, low maintenance border.

Buenas compañeras

  • Eutrochium purpureum — They share similar moisture needs and provide a nice height contrast.
  • Cardinal flower — Both thrive in the damp conditions this plant prefers.

Especies parecidas

  • Persicaria maculosa — It has a similar growth habit but features a dark spot on its leaves.

Ciencia

Familia
Polygonaceae
Género
Persicaria
Orden
Caryophyllales
Clase
Magnoliopsida
Distribución natural
Eastern Asia
Conservación
It is considered an invasive weed in many regions outside its native range.

It colonizes open, moist, and disturbed habitats by producing vast quantities of easily dispersed seeds.

Valor para la fauna
nectar source
Polinizadores
abejas, mariposas
Usos
ground cover, pollinator garden, naturalized areas

A lo largo del año

EFMAMJJASOND
Floración
Fructificación
Follaje

Indicadores ecológicos

Salinidad
2/9
Reacción del suelo
5/9
Luz
6/9
Temperatura
5/9
Humedad
7/9
Nutrientes
5/9

Taxonomía cotejada con GBIF.

Lo que más preguntan

Is it invasive?
Yes, it spreads aggressively by seed and is considered invasive in parts of North America.
How do I control it?
Pull the plants before they set seed to prevent further spread.

De dónde viene el nombre

The name Persicaria comes from the Latin word for peach, referring to the leaf shape, while longiseta refers to the long bristles on the stem sheaths.

Bueno saberlo

  • It is often called bristly knotweed due to the stiff hairs on its stem sheaths.
  • The plant thrives in damp, disturbed soil like riverbanks or garden beds.
  • It can produce thousands of seeds in a single season.

¿Tu bristly lady's thumb tiene mal aspecto?

Esta página es una guía general. Pocket Botanist diagnostica problemas a partir de una foto de tu propia planta, calcula el riego según tu luz y tus condiciones, y te avisa cuando toca cuidarla.

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Esta guía se ha generado con IA y se ha cotejado con la taxonomía de GBIF. Es información general, no asesoramiento botánico ni veterinario. Descubre cómo elaboramos estas guías.