I don't think imazapyr is what you are looking for to kill pines. That's what is used to kill everything else but pines. Whatever you spray be sure and use plenty of surfactant if you are planning to kill the pines.
So educate me here, imazapyr won't kill small pines but damn near everything else? We had a part of our land clear cut last year, About a month back, we sprayed a lane we wanted to keep with RM43 which has imazapyr and gly. I assume the gly would get it if the imazapyr won't?
