Michele in Ohio asked, "This is a little off topic, but has anyone seen
recent research on the three sisters technique for squash, corn and
beans?"
Michele,
Please check out the Southern Exposure Seed Exchange website. I believe
they have information on three sisters growing. It turns out it takes
special varieties, bred for the purpose, to make that work and you have
to know when to plant them. Otherwise, the beans will pull down the
corn and it will become a mess. For their ready-to-go three sisters
garden, they even have a seed mix: