Persicaria praetermissa (Persicaria praetermissa) care guide

Group
Plants
Other names
Polygonum praetermissum
Family
Polygonaceae (dock family)
Origin
East and South-east Asia to Australia
Water
freshwater
Temperature
18–28°C
pH
6–7.5
Care level
intermediate
Lighting
High light; CO2 recommended

Care

Persicaria praetermissa is a knotweed (smartweed) of wet ground and marshes in Asia and Australia. We could not reach a detailed source page for it, so little is recorded here about its size or behaviour under water. In the hobby, Persicaria species are grown submerged as background stem plants with narrow leaves that turn red or bronze under strong light. Give it high light, CO2 and regular fertiliser, and plant the stems in groups. Like its relatives it is really a marsh plant and also grows well emersed in paludariums. Water figures are our estimate, not from the sources. Sources: Wikipedia, List of freshwater aquarium plant species. Checked October 2026.

Breeding

Take stem cuttings with a node and replant them; they root quickly.

Compatibility and tank mates

Plant-eating fish may graze the leaves. Suits tropical and subtropical tanks with community fish and shrimp.

Last updated 8 October 2026. Community-edited care guide on Aquatic-Auctions.

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