Just be careful. If the plastic is up all day under the hot sun, the pond may get smothered and hot.
If we all went back to the original corn, and if every farmer planted HIS own SEED, then the crops would be much healthier to eat. The trouble with the corn is that it is so genetically modified that it is now very hard on people kidneys. Next time you eat the Juicy Sweet corn, see if your kidneys hurt after eating it.... Then cause we modified it so much over the very many years, through cross breeding and GMO's, we have significantly changed the corn, as it is now a pure 'Carbohydrate", whereas in the past, (ancient past), when we grew the old fashion kind, it was more of a "protein", and that corn was ground into a "maze" and used as "flour".
Then cause they all mostly grow the same identical seed, the crop is now at more risk, cause if a virus or disease broke out, the whole crop would be at risk as it is all cloned and genetically the exact same..
Many many years ago when the farmers saved their own seed, each seed was genetically different than the other, so if a virus or disease broke out, the whole crop would not be at risk, cause each seed was genetically different and some of the seeds would have resistance and survive. Many top crop specialist say the corn is now highly vulnerable to disease and viruses and could be wiped out significantly in the near future, as this has already happened in South America.
My corn may not be "Juicy and Sweet", but is is my very own corn, nobody else in the whole wide world has my corn, cause the seeds were saved from the crop of our very old ancient corn last year, and each seed is different, genetically speaking. My corn will be ground into a maze and I plan to make my own old fashion corn tortillas right in my cast iron pan this fall!!
Look!! My corn is starting to make tassels and the tassels are all different colors, some are mostly purple, some are red, some are pink, some are creamy white, some yellow, and some are totally black!! Just like people, they will ALL be Different!! How Cool is that? The kernels inside will all be different colors, just like the tassels!!