“In addition to shaping the plants, LEDs allow speedy, year-round crop cycles. This permits Zelkind and his team of growers and technicians to produce 200,000 pounds of leafy greens, vine crops, herbs and microgreens annually in a 12,000-square-foot warehouse, an amount that would require 80 acres of farmland.” WaPo: High-tech farmers are using LED lights in ways that seem to border on science fiction. Growing the future.