Arrowleaf Tearthumb

(Persicaria sagittata)

Arrowleaf Tearthumb (Persicaria sagittata)

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Estimated Native Range
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Summary

Persicaria sagittata, commonly known as Arrowleaf Tearthumb, is an herbaceous plant that can behave as an annual or perennial, depending on the climate. It is native to wetland areas, such as marshes and the edges of woods and streams, in the Eastern United States and East Asia. This vine or scrambling herb typically grows up to 200 cm (80 inches) tall, with distinctive prickles along the stem that aid in climbing. The leaves are notable for their size, up to 10 cm (4 inches) long, and their heart-shaped or arrowhead-shaped form, which is unusual for the genus. From late summer to early fall, it produces flowers that range from white to pink, borne in spherical to elongated clusters up to 15 mm (0.6 inches) long. The flowers are modest in showiness but can add a delicate texture to garden settings.

Arrowleaf Tearthumb is valued for its unique foliage and its ability to thrive in wet conditions, making it suitable for rain gardens or areas with poor drainage. It is often used for naturalizing in wild gardens or as a ground cover in moist, shaded areas. In cultivation, it prefers full sun but can tolerate part shade, and it adapts to a wide range of soil drainage conditions, from slow to fast. While it requires medium amounts of water, it is particularly well-suited to wetter sites. Gardeners should be aware that Persicaria sagittata can be potentially invasive outside its native range, and it is advisable to check local regulations before planting.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 1.5-2 feet
  • Width: 0.2-0.5 feet
  • Growth Rate: Rapid
  • Flower Color: White
  • Flowering Season: Summer, Fall
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Water: Medium
  • Drainage: Fast, Medium, Slow

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Low Maintenance, Water Garden

Natural Habitat

Wetland areas, such as marshes and the edges of woods and streams

Other Names

Common Names: Arrow-Leaved Knotweed , Arrow-Leaved Smartweed , Arrow-Leaved Tearthumb , Arrow-Vine , Arrowvine , American Tearthumb , Gratte-Cul , Renouée Sagittée , Jian Tou Liao , 미꾸리낚시

Scientific Names: Polygonum sagittatum , Persicaria sagittata , Tracaulon sagittatum , Persicaria sieboldii , Polygonum sagittatum var. sieboldii , Truellum sagittatum , Polygonum sieboldii , Truellum sieboldii , Persicaria aestiva , Persicaria sagittata f. aestiva

GBIF Accepted Name: Persicaria sagittata (L.) H.Gross