I've grown them - but from packets of Burpee seeds so maybe not as GMO as from a farmer's field, but who knows anymore. They grow like most beans do. Mine were just called Edamame on the packet, (which I think is just Japanese for soybean). But I shell them when green, boil them lightly and put them in salads and things like macaroni and cheese, pasta salads, etc. And then I always let some stay on the plants and dry out to save for seed for next year. I live near the Chesapeake Bay so it is very humid/damp. The plants a lot of years get some kind of black/brown disease spots on them, but it never seems to affects the beans inside the pods. I say that because I used to hunt on a farm in western MD that rotated a soybean crop, and I never saw the plants with that type of disease/wilt, but I'm sure they also sprayed stuff on them. There is a way to roast the beans and then eat them as a snack, but I've only ever had the commercially made ones like that. I don't eat a whole lot of them. I only plant maybe 1, 4' row of plants, so I don't think I'm over dosing on soy.
LOL