110 Days to maturity. Allium cepa. Organic Texas Grano 502 Onion Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, cold tolerant, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers. Resistant to Pink Root Rot. A milder-tasting onion that grows best in the southern USA climes, preferring a warmer growing season. Stores for 2 to 3 months when hung properly. Developed by Texas A&M in 1944, this variety produces large yellow-skinned globes with white flesh. ~7,000 seeds per ounce.