Most plants put and store most of the metals in their roots. But the percentage varies and you would have to look it up for particular species and a particular metal. So plants where roots are eaten would not be advised, but usually there would be much less in the stems, leaves or fruits.
> I am looking for information about where different types of plants absorb > and > retain heavy metals and other toxins. > > I would like to compile a list of edible plants that are safe to propagate > and > consume despite soil contamination. This could include plants that absorb > toxins but deposit them in isolated areas. I have been told, for example, > that > tree fruits can be planted in lead contaminated soil, because lead never > rises > high enough in trees to wind up in their fruits. Or, if you know of such a > list already out there, I would love to see it! > > I think that lead is the most common toxin in many urban areas, so I am > particularly interested in where plants deposit lead, but I would > appreciate > information on how/where they hold onto other toxins as well. > > Thanks for your help, > Ben >
