Hey Guys, I live in northern PA. I have heard many people say that the key to a good food plot is spraying weed killer prior to planting to ensure no other plants try to take over. Yesterday, I went to wal-mart and checked out some of the weed killing products. Here is where my question begins.

I looked at the back of many of the products, like Round-up Extended Control, and it said that it will CONTINUE to kill weeds for like 4 months. Wont that keep my food plot seeds from being able to germinate and begin growing?

Also, on many of the products it said DO NOT use in a garden, or a vegetable garden, etc. Basically, on anything that may be consumed. So, yet again, I'm left wondering: If people shouldnt eat things in the area that was sprayed, should I be spraying and then planting foods that I want deer to eat? Will it harm them..? Or is it okay to spray and then plant..?

When is the ideal time to spray..? Mid-march? Mid-april?
How long should I wait to plant AFTER spraying..?
Which weed killer sprays are the best/safest to use?

Thanks guys.