Well, it helps that the sort of terrain likely to be involved won't be flat. Or at least not for large stretches. So between topography, sun/shade, soil types and water distribution, it'd likely make sense to plant things where the conditions are best for them.

Things like the (invasive) Himalayan blackberries are more a case of keeping them from taking over everything else. :-)

And with at least one native plant folks who don't know the area *thoroughly* are at least as like to poison themselves as get food. (Camas vs Death Camas)