I have a 2 acre chunk of land that I want to convert to a plot next year. It was dozed last year and never touched, so its full of thistle and young raspberry bushes. I plan on discing this in the early spring (march-april). Then lime it since intial ph is in the low 6's. I want to plant imperial clover. What should I use for herbicides to prevent the thistle and other random crap I dont want, and when should I apply it? I'm thinking I would like to plant in August. Oh ya, I'm in Upper Michigan.