Identify Aquatic Plants and Critters

The presence of Eurasian Water Milfoil and concern over Zebra Mussels has all of us looking more closely at plants and critters in Granite.  Since new Aquatic Invasive Species (AIS) are turning up in Minnesota lakes, it’s a good idea to be on the lookout for “new” plants and critters, especially if you spend a lot of time on the lake.

  • If you find something that you don’t recognize, take a sample (note location, date, and time) and take as good a picture as you can.  Put the sample and a little lake water in a ziploc bag in the fridge.
  • Look through the pictures here and in links to DNR sites to identify your sample.  If you can’t find it, please e-mail the picture to pesheck@gmail.comand we will forward it to Wright County AIS specialists.
    • If you think your sample may be an invasive species,
      Call Pete Pesheck 612-599-7622 (or someone on the GL Association Board) as soon as possible.  Speed is important since response and treatment options can depend on how far the invasive species has spread.
    • AIS specialists may want to collect your ziploc sample and location info.
    • If your sample is not invasive but unusual in Granite, we will post the picture and species info here for future reference.


Aquatic Plant ID Sheet from the U of M Aquatic Invasive Species Research Center

Eurasian Water Milfoil Fact Sheet Jun 2010
Star Duckweed 2015
Starry Stonewort Oct 2015 MLR
Zebra Mussels