I agree with all of the above! But I will add a local Minnesota place called Venero Gardens in the western suburbs of the Twin Cities. It is unique because it is actually the residence of a couple who are unbelievable gardeners. They have a website but it only shows one small section of their astounding gardens. Some of the plants they offer are quite unique and they do limited shipping. I go there at least once or twice a season. The husband actually triple-dug all the gardens that cover an acre, and their soil is what I would call perfection. There is never a weed or brown leaf in the whole place. When you drive in and get out of the car, your jaw will drop and you will be unable to do anything but stare in amazement. I know they are getting ready to retire and are looking for the right person to buy the place and take over, but they want to make sure their excellent work is preserved. I only mention that because if you intend to visit, you might not want to wait years to do so. Jay and Dorie are lovely people.