Our vegetable garden was flooded by a storm. There is obvious oil and gasoline and who knows what else from the road and creek that got washed into it. What, if anything, can I plant this year? I don't think I can expect anything to be edible, but is there anything I can plant to make it not be a depressing empty garden of weeds that will make me sad all year that will be good for the soil? At what point is it safe to plant vegetables again? It's my understanding that sunflowers help to remediate the soil, but I don't know what kind of contamination they help with.