|'Oklahoma Delaware Blue', also known as 'Sehsapsing', is an heirloom variety. The plants are quite short, only 6 feet at most, with one 6 to 7 inch cob per stalk. The plants often send out side-shoots at the base with as many as 8 additional stalks. Each cob contains 8 rows of white kernels with much better flavor than most commercial corn. As the kernels mature, they turn blue, then purple, and finally black. At this time, it makes excellent, slate-grey corn flour. Originally domesticated by Mesoamericans, it is a staple food with many other traditional uses. Home gardeners love to grow corn, and there are many varieties suited to different climates. Plant seeds 1 inch deep in rows or clumps, two weeks after the last frost date. Corn needs rich soil, full sun and adequate moisture to produce good ears. It is wind pollinated, so if you want to save seed, you will need to either stagger the planting time of different varieties, or plant them 1/4 mile apart. Water deeply.