- Comparable to the Yellow Spanish Onion with less sharpness, best when grown in northern climates or fall Southern gardens.
120 Days to maturity. Allium cepa. White Sweet Spanish Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, cold tolerant, bulbing, long-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers. These large onion bulbs are considered a long-day type but also do well in intermediate-day regions. Large, sweet, mild, and can be stored for a moderate amount of time. The White Spanish Onion is comparable to the Yellow Spanish Onion but has less sharpness. More suited for northern gardens but is a great option for southern gardens in the fall. Approx. 8,000 seeds/oz.