Citizens choose flowers at Union Square Greenmarket in New York, the United States, April 3, 2013. The Union Square Greenmarket began with just a few farmers in 1976, has grown exponentially over the past 35 years. Regional farmers, fishermen, and bakers descend upon Union Square to sell their products to a devout legion of city dwellers who support local agriculture with their food dollars. (Xinhua/Wang Lei)

Citizens walk at Union Square Greenmarket in New York, the United States, April 3, 2013. The Union Square Greenmarket began with just a few farmers in 1976, has grown exponentially over the past 35 years. Regional farmers, fishermen, and bakers descend upon Union Square to sell their products to a devout legion of city dwellers who support local agriculture with their food dollars. (Xinhua/Wang Lei)

A citizen chooses flowers at Union Square Greenmarket in New York, the United States, April 3, 2013. The Union Square Greenmarket began with just a few farmers in 1976, has grown exponentially over the past 35 years. Regional farmers, fishermen, and bakers descend upon Union Square to sell their products to a devout legion of city dwellers who support local agriculture with their food dollars. (Xinhua/Wang Lei)

A farmer sells honey at Union Square Greenmarket in New York, the United States, April 3, 2013. The Union Square Greenmarket began with just a few farmers in 1976, has grown exponentially over the past 35 years. Regional farmers, fishermen, and bakers descend upon Union Square to sell their products to a devout legion of city dwellers who support local agriculture with their food dollars. (Xinhua/Wang Lei)

A citizen chooses flowers at Union Square Greenmarket in New York, the United States, April 3, 2013. The Union Square Greenmarket began with just a few farmers in 1976, has grown exponentially over the past 35 years. Regional farmers, fishermen, and bakers descend upon Union Square to sell their products to a devout legion of city dwellers who support local agriculture with their food dollars. (Xinhua/Wang Lei)

Citizens choose flowers at Union Square Greenmarket in New York, the United States, April 3, 2013. The Union Square Greenmarket began with just a few farmers in 1976, has grown exponentially over the past 35 years. Regional farmers, fishermen, and bakers descend upon Union Square to sell their products to a devout legion of city dwellers who support local agriculture with their food dollars. (Xinhua/Wang Lei)

Citizens walk at Union Square Greenmarket in New York, the United States, April 3, 2013. The Union Square Greenmarket began with just a few farmers in 1976, has grown exponentially over the past 35 years. Regional farmers, fishermen, and bakers descend upon Union Square to sell their products to a devout legion of city dwellers who support local agriculture with their food dollars. (Xinhua/Wang Lei)