Eliminating Burr Buttercup
I am going to have to replace my entire lawn over the next few weeks and I have an area of about 50 foot by 200 foot that is covered in Burr Buttercup. At this point, of course, it has all gone to seed. As I understand it, my best option it to wait until it emerges in very early spring and hit it with an herbicide. This doesn't mesh well with starting a new lawn this fall. Any other suggestions? If I burn the area would that kill off the seeds? I'm in southeast Idaho and we are under a severe fire alert so I probably couldn't get permission to burn it even if I wanted to.