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Polygonum amphibium

Amphibious bistort

Garden

Wishlist

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Features

  • BloomsJuly to September
  • Height0.3m to 0.75m
  • Growth HabitLow spreading
  • Flower ColourBright pink and red

Description

Polygonum amphibium (Amphibious bistort). This species will produce bright pink flowers which will form into spikes. This plant is often found in the wild in Northern Europe. STEM: Floating, rooting, sometimes upright ROOT: Creeping rhizome HAIRS: Hairless or with short hairs STIPULES: Joined forming tube LEAF-STALK: Short BRACTS: Scale-like FLOWER STALK: Shorter than flower PETALS: 5-lobed perianth, lobes petal-like and equal STAMENS: 5 STIGMA: 2 OVARY: 1, 1-celled SEEDS: Not separate

Characteristics

Perennial, Deciduous or Evergreen, Aquatic

Other common names

Willow grass

Origin

Britain & N. Europe

Interest and use

Aquatic

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Needs

  • LightFull sun, Part shade or Shade
  • HardinessHalf hardy (min 0°C)
  • SoilWell drained
  • Soil pH6.0 to 7.0
  • WaterMoist

Cultivation

They are fully to half hardy and will tolerate sun or shade in well drained soil.

Propagation

Seed or division in autumn or spring, climbers only by semi-ripe cuttings in summer.

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