pond plant invasion

Asked May 17, 2016, 11:08 AM EDT

We have a small pond approx. 40 x 80 feet about 15 feet deep and fed by at least 3 year round springs. It has an out flow of about 10 gallons a minute. The surface is about 80% covered by a plant that is 4" long and about 2 inches wide, green to brownish in color. These plants appear to be rooted in the bottom and only break off when I've tried to pull them out. Any ideas on how to get rid of them without hurting the frogs, fish and salamander that inhabit the pond?

Marion County Oregon weed issues aquatic weed control pond and water gardens horticulture

1 Response

Could you attach a picture of the plant. There are many ways to treat for algae and aquatic weeds that are not harmful to the animals living in and around the pond. However, effective treatment will differ based on the species you have in your pond. So proper identification is key. Regulations on herbicides differ between states and counties. So you should contact your local Extension office to find out what permits might be required.