Submerged perennial. Stems freely branched. Slender leaves with large teeth & prickles on underside. Stems prickly.
Prefers shallow, fresh or brackish water.
Vegetatively from fragments
Dense beds blocks waterways, impeding drainage, disrupting recreational activities choking hydro turbines. Out-competes native species.
NOTIFIABLE ORGANISM. Report to MAF, council or DOC biosecurity team.
1. Dig up rhizomes, remove all material from pond.
2. Spray larger infestations, (5-7L Roundup Dry/ha/100L)
Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.