Hi Bridget!
I also live in South Dakota, but way on the other side of the state, just outside of Sturgis. I do happen to know some people around the Sioux Falls area who are very permaculture friendly and engaging. There are also a couple good groups on your side of the state who get together and talking about growing food and kids and all of the good things. I would be happy to send you some names and info if you want to reach out to me. My husband and I have an organic farm called Bear Butte Gardens and you can check out our website or social media pages.
