Onion Long Day Walla Walla represents a legendary heirloom variety prized throughout the Pacific Northwest for its exceptional juiciness, remarkable sweetness, and ultra-mild flavor profile that distinguishes it from conventional onion varieties. This regional favorite has earned devoted followers among culinary professionals and home gardeners alike, delivering an eating experience that transforms fresh onion applications. The traditional cultivation method in the Northwest—sowing seed in late August for early summer harvest—produces the most impressive results: very large, distinctly flattened bulbs with unparalleled sweetness and tenderness. In regions with winter temperatures consistently above -10°F, overwintered crops achieve superior size and flavor development. For colder climates where winter survival is uncertain, spring planting using seeds or transplants yields respectable results, though bulbs remain somewhat smaller and less intensely sweet than overwintered crops. Even spring-planted Walla Walla surpasses most varieties in mildness and juiciness. The tender, succulent flesh makes these onions exceptional for fresh applications—slicing into salads, grilling whole, or enjoying as a "green top" onion at immature stages. With a 125-day maturity window and approximately 70% or higher germination rate, you'll establish reliable crops suited to your regional conditions. These non-GMO heirloom seeds preserve authentic genetic heritage through sustainable practices. Our environmentally responsible packaging—reusable, recyclable, and climate-conscious—reflects our commitment to quality stewardship and long-term gardening success.

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David’s Garden Seeds is a Veteran owned business that has been offering quality onion seeds since 2009.

David's Garden Seeds® is a member of the GO TEXAN agriculture program.

We cannot possibly put all the directions you need for growing onions in your area on the seed package. We recommend that you read articles or check with other gardeners in your area.

This is an heirloom seed, meaning it has been passed down from generation to generation for at least 75 years. As a rule, heirloom seeds taste better and will grow the same year after year.

These are also open pollinated meaning they will reproduce themselves. While all heirlooms are open pollinated not all open pollinated seeds are heirlooms.

Freshly Packed: These onion seeds are packed for the current growing season and will provide high germination rates next year as well.