Washington Bulb Co., Inc. is the largest domestic grower of cut tulips, daffodil, iris and lilies flowers and their bulbs, located in Mount Vernon, WA. CROPS GROWN AND ACREAGE: Daffodils - 500 acres Tulips - 350 acres Iris - 150 acres Wheat - 600 acres SALES: Over 70 million cut flowers are shipped all over the U.S. annually. 10's of millions of bulbs are shipped throughout the U.S. and Canada annually.