Organic farmers aren’t allowed to plant GMO seeds. But most conventional corn in America is genetically modified, and among all grains, corn is perhaps the most promiscuous cross-pollinator, so its genes often migrate into organic fields via windblown pollen that lands on the tassels of organic corn.
As a result, most organic corn in the U.S. typically contains anywhere from half a percent to 2 percent GMOs, according to companies that sell such corn to organic dairies or poultry farmers. It has been that way since genetically engineered corn and soybeans became popular, more than a decade ago.
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