Plant: the same as sweet corn. HARVEST: After stalk has dried down, pick an ear of popcorn and test pop it. If it pops good, you are ready to pick popcorn. If not, wait 2-3 weeks and retry. Ears can also be picked as soon as stalk is completely dried down and a brown color. Pick ears, husk and cure in a dry, cool place for 3-4 weeks or until it pops good. Shell and use.  HINT: after shelling, store popcorn in the freezer. When ready to use, take out of freezer and pop when still frozen. This will cause it to pop better.