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Richardson's pondweed

Potamogeton richardsonii

Also called Red Headed Pondweed, Richardson Pondweed, Richardson’s Pondweed, Red Head Pondweed, Redheadgrass

Richardson's pondweed
Photo: Robert H. Mohlenbrock, Public domain

Richardson's pondweed is a submerged perennial aquatic plant that grows in ponds, lakes, ditches and slow streams across northern North America and Siberia. It is grown mainly in ponds and water gardens, and it needs to stay submerged in cool, clear, nutrient-moderate water.

Family
Potamogetonaceae (Potamogeton family)
Grows as
Aquatic, Perennial
Light
Full sun, Part shade
Water
Keep fully submerged in water at all times; no watering as such is needed.
Soil
Rooted in a mud or sandy-silt substrate at the bottom of a pond or pool, with rhizomes anchoring it.
Temperature
Hardy in cold climates; tolerates near-freezing water. Keep above freezing in the pond and avoid heat above about 25 °C.
How easy
Easy
Native range
E. Siberia to Russian Far East, Subarctic America to U.S.A.
Climate
temperate

About

Potamogeton richardsonii is a species of aquatic plant known by the common name Richardson's pondweed. It is native to much of northern North America, including all of Canada and the northern and western United States. It grows in water bodies such as ponds, lakes, ditches, and streams. This perennial herb grows a narrow, mostly unbranched stem from a mat of rhizomes in the substrate. It reaches about a meter in maximum length. The leaves are up to 13 centimeters long and about 3 wide with crinkly pointed or rounded tips. The inflorescence is a spike of flowers arising from the water surface on a peduncle.

Other Potamogeton plants

Sharp-leaved pondweed · Alpine pondweed · Largeleaf pondweed · Small Pondweed · Red Pondweed · Little aguja pondweed · Fen Pondweed · Grass-wrack pondweed · Tuckerman's pondweed · Curly pondweed · Little-leaf pondweed · Pondweed

Text excerpted from the Wikipedia article Potamogeton richardsonii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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