I have an approximately 1 acre fish pond. I'm getting a lot of bushy, fast-growing trees that I think are Willow popping up all around the water's edge, including all over the dam. I assume that's not a good thing. I've been just cutting them off or mowing them down, but they come back almost as fast as I can cut them. If I try to pull them up by the roots I rip up a lot of dirt and grass and I don't want to cause erosion problems. I only recently got enough grass growing well around the pond to stop erosion and I don't want to cause problems again.

Anyone have tips on how to stop or slow them down? I'm hesitant to use Roundup because I don't want to get it into the water.

Also, I've been told that Weeping Willow is different from these wild Willows and won't spread around if I plant one by the pond. Will I cause myself problems if I plant a Weeping Willow near the water's edge? (not on the dam). Will it drink enough water to be a problem for the pond?