JarrenB Posted April 14, 2009 Report Share Posted April 14, 2009 Hi, can anyone fill me in on why under pest plants on the main FNZAS page there is so many well known aquarium plants some that I've had myself in the past. for example oxy weed, I've had this in my tanks many times before then i could not find it for sale anymore this must be why. Quote Link to comment Share on other sites More sharing options...
Scottie841 Posted April 14, 2009 Report Share Posted April 14, 2009 It is highly invasive and will take over any stream that is is dumped in This is a page from NZ bio security This pest is in New Zealand. Other common name: lagarosiphon Description Lagarosiphon is a submerged bottom-rooting perennial which grows up to 5 m tall. Leaves are arranged spirally around the stem, and are curved backwards or downwards. All other oxygen weed species have leaves arranged in groups (whorls) of three to eight, rather than alternately. Tiny pinkish flowers are produced. Impact Lagarosiphon grows quickly, forming dense mats which block waterways and displace native plants. It is a major weed in hydroelectric dams, also impeding irrigation, drainage and other water uses. What to do Contact your regional council to determine the status of this species and responsibility for control and/or advice on control. Quote Link to comment Share on other sites More sharing options...
Zev Posted April 15, 2009 Report Share Posted April 15, 2009 There are several plants that are commonly called oxygen weed, the only legal one is Elodea canadensis (Anacharis) Quote Link to comment Share on other sites More sharing options...
JarrenB Posted April 15, 2009 Author Report Share Posted April 15, 2009 thanks for that Quote Link to comment Share on other sites More sharing options...
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