How long does decorative Indian corn last?
If you're growing Indian corn for ornamental use, be sure to wait until the husks are no longer green to pick them, then let the ears dry for about a week. Once that's done, you can store them at room temperature for four to six months.
Use a Spray-On Protectant – The best way to deter insects is by coating the dried corn with a spray-on protectant. Krylon's Preserve It! spray is a good option, and it can also help to keep the color looking fresh for longer.
Preserving Indian Corn
Tie several cobs together with twine near the bottom of their husks, then hang them somewhere warm and dry for several days or up to two weeks. To see if they're done, poke a kernel with your nail. It should leave no dent in the kernel. Finally, apply a light layer of shellac to the corn.
Plants grow 5-8 feet tall and produce 8-10” ears in 100-110 days. 'Rainbow' – is an open-pollinated flint corn with kernels in brilliant red, blue, purple, white, gold and orange shades on 7-10” ears. The husks may be tan or purple. 100-110 days.
Indian corn doesn't last forever even if it's been dried, but dried corn can last for more than thirty years if it's kept sealed up in an oxygen-free storage environment.
Question: How do you save Indian corn to plant? Answer: Choose the best kernels from the best cobs and after properly drying the kernels, store them in an airtight container somewhere where it is cool and dark (out of the sunlight) and not humid. Many people store seeds that they are saving in their refrigerators.
It's best to use your corn the day you buy or harvest it. However, you can keep it fresh longer by storing it, unwashed and unpeeled, in a sealed plastic bag in the crisper drawer of your fridge. This'll keep it usable for about five to seven days.
Shelf Life Tips
How long does unopened canned corn last at room temperature? Properly stored, unopened canned corn will generally stay at best quality for about 3 to 5 years, although it will usually remain safe to use after that.
Whole Dried field corn stores for 30+ years when repackaged and sealed in an oxygen-free container such as a Mylar bag or #10 can with the proper amount of oxygen absorption. Removal of oxygen will extend shelf-life and kill bugs at all stages of life.
What is this? The seeds of Indian corn have to be chucked from the corn cob to be used. Once removed, they can be used for popping into popcorn, or ground to make what is known as masa. The ground masa, or corn meal is then used for lots of dishes including grits, polenta, tamales and masa cakes.
How do you know if corn is going bad?
The appearance and aroma of your corn are the two main ways to tell whether or not it has gone bad. If it's giving off a rancid or moldy smell, or has a slimy and mushy texture, it should be tossed in your compost. Similarly, if there's any visible mold on your corn, it has gone bad.
Well, the warning signs are mostly obvious and involve sight and smell. Per Eat Delights, for example, if your corn on the cob looks moldy or smells rancid, that's a sure indication it's no longer fit to eat. A slimy or mushy texture is also a dead giveaway.

For best flavor, use corn within two days. Keep husked corn refrigerated, in plastic bags, and use within two days. If you don't plan on eating your corn within two days of purchase, you can freeze it.