110-160 Days to maturity. Allium cepa. Yellow Granex PRR Onion Seeds. Non-GMO, annual, hybrid, cold tolerant, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers. Resistant to Pink Root Rot. Also known as the Vidalia onion or Georgia Sweet onion, the Yellow Granex hybrid onion is one of the sweetest onions you can grow. As a sweet onion variety, the Granex Yellow hybrid is not a good choice for long-term storage. ~ 9,000 seeds/oz.