I just discovered some place else to check out just outside of Mansfield. Baker Creek sells heirloom variety seeds both nationally through a catalog and directly out of their store. Read about it here:
The store seems to be part of a created country town. From the photos on their website it doesn’t look like it strives for authenticity, but could be a fun place to spend some time. It seems like a more frivilous version of the Seed Savers Farm outside Decorah, Iowa near Burr Oak, which can also be a great additional stop for a Laura fan.
In case you don’t know, most modern seeds are hybrids. Hybrid seed stock is inbred and then crossed. This creates one generation of super seeds, but that generations offsprings are almost always worthless. You have to buy a new set from the seed company the next year. Previously varieties were breed and seed saved year to year. These varieties were breed for characteristics outside the modern goals of 1) all maturing at the same time for easy mechanical harvest 2) long shelf life and 3) transporting well. You’ll notice flavor, variety, multiple maturation dates for a long harvest and adaption to localized climates and soil types aren’t on that list. Desire to recapture some of those characteristics and to keep alive more than just the handful of varieties of each product have caused a movement to grow and harvest seed from heirloom varieties. Baker Creek is one place that does that. I haven’t ordered from them yet, but a friend’s brother has had nothing but good experiences with them. I think they might be worth an hour or two on your trip. They are going on my list of things to do next time I head south.