|Last year I cleaned out an area in my yard for a flower/vegetable garden. While tilling the soil with a shovel, I discovered a great deal of refuse obviously deposited there by previous residents. The garbage included such things as glass, paper, plastic, tires, aluminum cans, styrofoam, batteries, stereo components, bicycle parts, car parts, foam pads, and even a plastic garbage can! Most of the items were heavily degraded, rusted, and broken down chemically. Much of the visible garbage was removed but the suspected presence of leachate convinced me to not grow any vegetables. Would vegetables grown in this plot absorb and retain any harmful chemicals that may be present in the soil making them unsafe to injest? I have been told that plants only take in what they need; however, I've seen Willow trees used as a groundwater clean-up method at contaminated industrial sites. Any insight would be greatly appreciated. Thank you.