Nodding waternymph is a submerged aquatic annual that grows in shallow fresh or brackish lakes and bays across the Northern Hemisphere. It reproduces from seed each year and needs clear, nutrient-moderate water.
Family
Hydrocharitaceae (Hydrocharit family)
Grows as
Aquatic, Annual
Light
Full sun, Part shade
Water
Grows fully submerged in water; no watering needed beyond keeping it in its pond or tank.
Soil
Rooted in mud or sandy sediment at the bottom of shallow water.
Temperature
10–25 °C; dies back in winter and regrows from seed in spring.
How easy
Moderate
Native range
Temp. Northern Hemisphere
Climate
temperate
About
Najas flexilis is an aquatic annual plant native to parts of North America and Europe. It is native to northern and central Europe from Norway to Ireland to Switzerland, and from there across Russia (including Siberia). It is also considered native throughout most of Canada, and the northern United States in disjunct populations in southern California, Arizona, Missouri, South Carolina and Utah. Its common names include slender naiad and nodding waternymph.
Najas flexilis inhabits shallow bodies of brackish and fresh water such as lakes and bays. It is also native to northern Europe, where its range includes Scotland, Poland and Sweden. It is rare in the European portion of its range and is strictly protected by Appendix I of the Berne Convention. The largest population is in Lake Sīveri in Latvia.
Text excerpted from the Wikipedia article Najas flexilis 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.