Hi everyone, I am looking for a way to remove Creeping Buttercup from a lawn. Though there are small patches of grass without any buttercup (about 20% of the lawn), the rest of the area is covered with a mix of grass and buttercup. The ground slopes towards a green-belt with trees (non-coniferous) (trees about 6 feet from the edge of the lawn) and a fish bearing creek (about 20 feet away from the lawn). What are my options for getting rid of the buttercup? (a) Is a herbicide the best way of doing this? If yes, are either Roundup or triclopyr (Weed-B-Gone?)appropriate for my situation? I looked at the descriptions online for half-life of glyphosate and triclopyr in soil/water, but don't have enough experience to judge if these should be used near a creek and a dense stand of trees. (b) Is there any other chemical tratment that is more appropriate? (b) Using a herbicide or otherwise, when is a good time to do this in Vancouver? Now (December) or in the spring? (c) The lawn has not been mowed for 3 months (the grass is about 6 inches tall). Should it be mowed before applying any herbicide? (d) I am guessing that I would have to plant grass once the weeds are gone. I would be doing this from seed. When is the right time to start a cold-season grass in vancouver? (e) Should I pull out the buttercup by hand? (I've tries this - but cannot seem to remove the plant completely - especially the roots). Since I am new to gardening I am not sure if some tool (any particular kind of rake, for instance) would make this easier. Any suggestions/advice would be greatly appreciated!