There are a lot of plants that you can eat a little part of, which then grows back, like the leaves on chard or lettuce plants. In our garden the chard plants p

There are a lot of plants that you can eat a little part of, which then grows back, like the leaves on chard or lettuce plants. In our garden the chard plants produced for months. In commercial farming, it's just cheaper to cut the entire plant off and clear the land for the next crop.