Did you know that ancient Egyptians valued onions so much that officials took office with their right hand on an onion? And that in the Middle Ages they were so valuable that they were given as wedding gifts? And that the onion is actually part of the lily family? These and many more interesting facts about onions can be found in the Colorado State University Extension publication Colorado Onion Production and Integrated Pest Management. Available from our library, this is an essential guide for any Colorado onion grower. It outlines the different varieties of onions that grow in Colorado, procedures for fertilizing, harvesting, and post-harvest, and weed and insect pests. If you grow onions, be sure to check this guide. We also have many other publications on all kinds of Colorado crops; search our web catalog for much more agricultural information.