LAND INFORMATION
Agricultural Programs
Comprehensive Planning
Environmental Education
GIS - Geographic Information System
Green Bay West Shore Demonstration Farm Network
Invasive Species
- Marinette County Invasive Species Strategic Plan
- European Frogbit
- Eurasian Water Milfoil
- Phragmites
- Purple Loosestrife
- Round Goby
- Rusty Crayfish
- Spongy Moth (Formerly Known as Gypsy Moth)
- Zebra Mussels
- Contact Us
- Forms & Documents
- Links
Lake Associations
Land & Water Conservation
Mar-Oco Landfill
Non-Metallic Mining
Plat Book
Property Listing
Redistricting 2020
Sanitation
Surveying
Town Ordinances
User Fees
Wildlife Damage
Zoning
BACK TO ALL DEPARTMENTS
European Frogbit

European frog-bit grows in shallow, quiet, or slow-moving water; along the edges of lakes, rivers, and streams; and in swamps, marshes, and ditches. It is a free-floating, stoloniferous aquatic plant that can grow to form dense floating mats of interlocking plants. The leaves are leathery, measure 0.5-2.5” across, and are round to heart-shaped. The flower has three white petals and the stem has horizontal runners that produce new plants.

The dense growth form of this species can get caught in boat motors, affect fish and waterfowl movement, and decrease oxygen levels in water as plants decompose.

European frog-bit is extremely difficult and costly to control, and its ability to form new plants vegetatively has allowed it to spread and proliferate quickly. The plant has been declared a noxious weed in parts of the United States.

Click here for a fact page about European Frogbit. Including an overview, Identification, Distribution, Control and photos. »