Nobody really likes to be graded. Especially when you don't get an A.

Some organic farmers are protesting a new grading system for produce and flowers that's coming into force at Whole Foods. They say it devalues the organic label and could become an "existential threat."

The rating system is called "Responsibly Grown." And the company developed it as a way to give customers more information about how their food is grown, says Matt Rogers, a global produce coordinator for Whole Foods.

"We're really proud of the food we sell, and we know a lot about it, in general, and we want to share that with customers," he says.

To read the rest of the story, please go to: NPR