Sunil :

For many years we had no weed problem in these ponds. Then one day vr.leaf pondweed showed up and started spreading in one pond only. None in second pond and no other weed problems. My guess is that a visiting duck or goose (we have none to 1 or 2 on occasion) left us a present as they like the seeds and spread them around. I would like to keep some pondweed in certain areas but keep it out of other areas -- that is a problem.