Southern Naiad

Family:
Najadaceae
Origin:
North America

General description

Submerged aquatic, similar to oxygen weed. Very narrow leaves crowded on short branches, or in whorls of 3. Leaves toothed, deep green to purplish green. Flowers small and inconspicuous.

Still or flowing freshwater: lakes, ponds, dams, ditches, streams.

Seeds dispersed by water; also spreads from stem fragments.

Dense beds block waterways, impeding drainage, disrupting recreational activities, choking hydro turbines. Out-competes native species.

Site management

Report all sightings.

Recommended approaches

1. Rake or seine from pond; will re-establish from any remaining fragments & roots.
2. Spray (18L diquat/hectare).

Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.

Similar species

hydrilla
Hydrilla verticillata

Hydrilla lacks the short branches between the stem and the leaves.

egeria
Egeria densa

Egeria lacks the short branches between the stem and the leaves. Egeria's leaves have smooth margins.

lagarosiphon
Lagarosiphon major

Hydrilla lacks the short branches between the stem and the leaves.

Search tags

RPMS status

Unwanted Organism - nationwide
southern naiad - Main species image