Persicaria praetermissa

Spotted Knotweed

Scrambling to clumping perennial herb with short stiff downward facing hairs. Sheath at base of leaf has scattered short hairs, top margins hairless.

Additional information

• SynonymSeparated from Polygonum strigosum
• FamilyPolygonaceae
• StoreyLower storey
• SizeStems to 1 m+ long
• Plant groupingAquatic & Semi aquatic
• LeavesArrow-shaped leaves 3-20 cm x 6-18 mm, with short coarse hairs on margins, midribs and scattered on leaf.
• Flower colourPink or white
• Flowering timeDecember to April
• FlowersNarrow cylindric spike 5-9 cm long, forked halfway along spike, flowers in 2-5 clusters spaced along the spike.
• Bird attractingLeaves, seeds
• Butterfly attractingNo
• Frog habitatYes
• Growing conditionsAquatic to semi-aquatic in swampy areas and edges of slow-moving rivers in lowlands and foothills.
• Garden useWet areas and bog gardens creating animal and waterbird habitat and protection.
• Commercially availableIndigenous nursery
• Conservation statusLocally common within its preferred growing conditions

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