Pricing is one silver dime, dated 1964 or earlier, per packet of seeds, or $5 paper currency. (No checks or digital payments.)
Clones/cuttings/tubers of this variety are available. Shipped only during warm weather. I'll delay shipping until the weather warms up. If requesting this variety, please add $7 for shipping, which will cover shipment of several different kinds of cuttings/clones/tubers.
Lofthouse Sunroots (Helianthus tuberosus) originated as a cross between an improved population of feral sunroots collected in Kansas, and a commercial clone. They have been selected for vigor, productivity, and good agronomic and culinary properties like ease of digging and cleaning, larger seeds, bigger flowers, shorter stolons, larger tubers, etc. Because they are a genetically diverse population they set seeds prolifically, weather permitting. Collecting lots of seeds may require bagging the blossoms soon after petal drop to prevent predation by birds. This variety was developed for subsistence level growing without the use of fertilizers or cides. They are winter hardy in a cold mountain valley in USDA zone 4b. Sunroot tubers are very susceptible to dehydration, so roots are best stored in soil, or refrigerated in plastic. Plant seeds about the time that apple trees are blooming. Sunroots stored overwinter in the ground can be harvested whenever the soil isn't frozen. I typically cut stems off about a foot high in early winter to prevent winds from levering the tubers out of the ground. These are reliably winter hardy in USDA zone 4b. Bred by Joseph Lofthouse. OSSI-Pledged.
I have some of his carrot seeds, and they are amazing! You get some wonderful variety and excellent quality from Joseph's seeds.
There are seed / plant swap groups here, and there is likely one in your general area of the country.
I'd be happy to send you some for free but I'm in Canada and sending live plant material across the border would probably get me onto some sort of naughty list.
Try the supermarket its where I got mine down here. But if you know what it looks like it can be found growing wild in some places I have seen it growing wild outside of Campbellsville, KY When I lived up there