|Botanical Name||Hydrocleys nymphoides|
|Origin||Tropical South America|
IdentificationWater poppy is a water lily like perennial plant. Leaves are thick and shiny and float on the surface, with each shoot connected by a network of elastic creeping stems that form a deep mat. It has a distinctive three petalled solitary pale yellow flower with a dark purple centre. Flowers are up to 80 mm across.
HabitatsStreams, shallow ponds and lake margins. Temperature range between 10-22c.
Impact to Biota and EcosystemsWater poppy grows rapidly in warm well lit water bodies to depths of 2 metres. It can completely choke streams, shallow ponds and lake margins.
Dispersal Routes, Vectors, Infestation SourcesNo viable seed is produced and any new sites will be the result of deliberate planting.
Can be removed mechanically rather than chemically.
Glyphosate: A consent is required to apply herbicide over water.
Water Poppy is an Eradication Pest Plant within the Bay of Plenty Region.
No person shall knowingly communicate, cause to be communicated, release, or cause to be released, or otherwise spread any Eradication Pest Plant (see section 52 of the Biosecurity Act 1993);
No person shall sell, offer for sale, display or propagate any Eradication Pest Plant in contravention of s.53 of the Biosecurity Act.
Any sighting of Water poppy should be reported to a Pest Plants Officer. They will make arrangements for control of the plant.