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Curly Waterweed

An increasingly problematic garden pond weed; sold as a water oxygenater but quickly spreading.



Common Name Curly Waterweed
Alternative Name(s) Curly Water-thyme
Scientific Name Lagarosiphon major
Species Group Aquatic Plants
Interest Level
Look for
Identification Notes
Primary Habitat
Family Frogbit family - Hydrocharitaceae
Status Scarce
Flower Colour Group Pink
  • 07 - July
  • 08 - August
Preferred Environment
Look for Inconspicuous little pink flowers appearing above the surface of water from submerged plants
Additional Identification Notes
Similar Species

The records for this species have been organised into reports, charts, maps and photos. Click a pic below to see the detail:

Notebook Sites List Distribution Map Some Charts Some Photographs Recent Records Guidance Notes

To see related species click here: 

Aquatic Plants