Hello just back from hols. Wanted to give an update on my 3 sisters patch, where I was growing sweetcorn, pumspkins and drying beans. August was quite miserable here, but I got a few cobs of corn (but quite a disappointing result really, next year I will pay more attention to pollination), I have currently 5 pumpkins still getting bigger and I strode in yesterday, pulled out the corn and stripped off all the beans so now teh pumpkins are alone. I got a good crop of dried beans, enough for several recipes over the winter (some were still too tender so I will use them to make a traditional French pistou soup, which uses the end of summer veg).
So I think that the system works very well, the weeds were reasonably controlled and the veg seems to be quite good quality.
Note to self - do the same thing next year ;)