Persicaria prostrata

Creeping Knotweed

Prostrate perennial herb with sparse to dense hairs facing upwards. Sheath at base of leaves with few hairs on sheath and top margin, upper section has toothed or lobed green appendage.

Additional information

• SynonymPolygonum prostratum
• FamilyPolygonaceae
• StoreyLower storey
• SizeProstrate x up to 40 cm
• Plant groupingAquatic & Semi aquatic
• LeavesHairy lance-shaped to narrow elliptic leaves 1.5-5 cm x 3-10 mm.
• Flower colourGreen
• Flowering timeDecember to May
• FlowersDense oval spikes 1-4 cm long of tiny flowers in leaf axils.
• Bird attractingLeaves, seeds
• Butterfly attractingNo
• Frog habitatYes
• Growing conditionsHeavy soils and sandy or rocky banks of watercourses, tolerating waterlogging. Full sun, semi-shade.
• Garden useGroundcover for wet areas.
• Commercially availableNo information available
• Conservation statusLocally common within its preferred growing conditions

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