Weeds - Goulburn Broken Catchment Management Authority

State Prohibited Weed
Salvinia
Description: A floating mat-forming aquatic fern, with slender
branching rhizomes occurring just below the water surface.
leaves: Submerged brown leaves, deeply divided on stalks,
ending in hairy root-like filaments. Emergent green, oval,
smooth edged and short stalked leaves. In pairs 1-5 cm
wide. Top of leaves are covered with fine waxy hairs that
make it water repellent.
stems: Slender, jointed and branched to 30 cm long.
Note: Forms dense mats that restricts water flow, hinders
recreational use and reduces oxygen. Reproduces entirely
from vegetation fragments. Weed of National Significance.
similar Native species: Not likely to be confused with native
species, though from a distance an infestation covering a
pond may look like Azolla.
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Salvinia molesta
(Giant Salvinia, Water Fern)
j f M A M j j A s O N D
CONtROl OPtIONs VECtOR Of sPREAD