Longleaf pondweed (Potamogeton nodosus) is a perennial aquatic herb that grows submerged in ponds, lakes, ditches and slow streams, with floating leaves on long stalks. It is grown mainly in water gardens and pond habitats and needs still or slow, fairly clear water.
Family
Potamogetonaceae (Potamogeton family)
Grows as
Aquatic, Perennial
Light
Full sun, Part shade
Water
Grows submerged; keep it planted in water at all times.
Soil
Muddy or sandy pond-bottom substrate, or a heavy loam in a container under water.
Temperature
Tolerates cool to warm water; hardy in temperate climates, may die back in winter.
How easy
Easy
Native range
Cosmopolitan
Climate
temperate
About
Potamogeton nodosus is a species of aquatic plant known by the common names longleaf pondweed and Loddon pondweed. It is native to Eurasia and the Americas, where it is widespread and can be found in water bodies such as ponds, lakes, ditches, and streams. This is a perennial herb producing a thin, branching stem easily exceeding a meter in maximum length. The submerged leaves are linear to widely lance-shaped and up to 15 by 4 centimetres (5.9 in × 1.6 in) in length and width, respectively, while the floating leaves achieve shorter maximum lengths and are ovate or elliptic. Both floating leaves and submerged leaves are borne on long petioles, a distinguishing characteristic. The inflorescence is a spike of many small flowers arising from the water on a peduncle.
Text excerpted from the Wikipedia article Potamogeton nodosus 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.