Eurasian Frogs-Bit
Hydrocharis morsus-ranae
Family: Hydrocharitaceae
Weed class: monitor list
Year Listed: 2012
Native to: Asia and Europe
Is this Weed Toxic?:
not known to be
Legal listings:
This plant is on the quarantine list. It is prohibited to transport, buy, sell, offer for sale, or distribute plants or plant parts of quarantined species into or within the state of Washington or to sell, offer for sale, or distribute seed packets of seed, flower seed blends, or wildflower mixes of quarantined species into or within the state of Washington. Please see WAC 16-752 for more information on the quarantine list. For questions about the quarantine list, contact the Washington State Department of Agriculture's Plant Services Program at (360) 902-1874 or email PlantServices@agr.wa.gov.
Why Is It a Noxious Weed?
This plant is on the monitor list - it is not a listed noxious weed in Washington. Please contact its sponsor Wesley Glisson wgli461@ecy.wa.gov to report locations or for more information.
How would I identify it?
General Description
A small, floating, aquatic plant
Flower Description
3 round white petals surround a yellow center, which grow on short stems above the water surface
Leaf description
Round, lilly-pad shaped leaves that are 0.3-2 inches wide.
Stem description
No stems besides the stalk leading to the flower, and the spreading stolons
Fruit Seed Description
small berries
Where does it grow?
Still water, like ponds and ditches
How Does it Reproduce?
Seed and by stolons that tangle across the water surface
How Do I Control It?
Please refer to the PNW Weed Management Handbook, or contact your county noxious weed coordinator.