110-115 Days to maturity. Allium cepa. Organic Utah Yellow Sweet Spanish Onion Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, cold tolerant, bulbing, long-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers. This yellow onion is considered a long-day type and may be grown in intermediate-day regions as well. Recommended by Utah State University and is the state vegetable of Utah. Can also be used as a companion plant for many common vegetables to organically control pests. This Spanish Onion is relatively easy to grow with moderate pink root tolerance. ~7,000 seeds per ounce.