I planted 2,000 conifers (seedlings) on about 4 acres this past April 09. The area I planted in was in corn in 08. So the field was bare. Now however the weeds are tremendous and I have cut them down with a bush hog and now I need to spray for the weeds without hurting the seedlings. Do you have a product which could be used without hurting the trees?  Thank you.

More on weed control around trees