Najas guadalupensis (Common Water Nymph or Southern Naiad) is a fully submerged, annual aquatic plant native to Texas and much of North America. With slender, gray-green stems that can reach up to 3 feet in length, it plays an important ecological role in freshwater habitats. This underwater plant provides food and shelter for ducks, waterfowl, and aquatic life. It’s ideal for natural pond restoration, fish tanks, and as an oxygenator in healthy aquatic systems.

Scientific Name: Najas guadalupensis

Origin: Texas and North America

Native Habitat: Fully submerged in freshwater ponds, lakes, and slow-moving streams

Height: Submerged stems up to 3 feet

Spread: Variable (floating and spreading underwater)

Light: Full Sun

Water: Wet (fully aquatic)

USDA Zones: 6–11

Bloom: June to August

Flower: Tiny green (insignificant)