Adding to an established meadow
I have about three acres that I planted about two years ago with wildflower seed. Although I have alot of areas that are doing well some areas are mostly weeds. I have been doing a lot of weed control but would like to add more seed to get a better result. I would also like to add annuals to the areas that are already doing well. My question is what is the best way to do that? The area is too big to work up by hand and I am afraid if I go over the area with anything to try to get better seed to soil contact that I will destroy already existing plants. I would appreciate any advice that you can provide.