This is the classic large overwintering onion of the Pacific Northwest. A very large, juicy onion with a mild sweet flavour. It can be planted in the spring if given a really early start indoors, or in August to overwinter. Spring planted Walla Walla sweet onion seeds result in bulbs that are not quite as mild as the overwintered ones. & spring sown Walla Walla onions may not size up as well. We recommend that home gardeners should wait & plant for overwintering onions. This variety is hardy to -23oC (-10oF). It is most definitely a long day onion, suitable for planting between the 35th & 55th parallels. It might not have good storage ability, but man, it makes beautiful caramelized onions! 500 Organic Walla Onion Seeds Mild & Sweet Great For Salads Eating Fresh Zwiebel Samen