Long-day onion seeds are suited to northern gardens where summer daylight is long enough to encourage bulbs to form. The Sow Right Seeds collection is best for gardeners who want several varieties, while its Ruby Red and Walla Walla packets suit growers choosing one type. KVITER offers another Walla Walla option, and Organo Republic is a broad vegetable assortment that includes Walla Walla seeds.
| Product | Best For | What Sets It Apart |
|---|---|---|
| Sow Right Seeds Long Day Collection | Growing several onion varieties | Five varieties in one collection |
| Sow Right Seeds Ruby Red | Red bulbs and fresh dishes | About 160 seeds; stated storage up to six months |
| KVITER Walla Walla | Northern gardens seeking Walla Walla | Long-day sweet yellow variety |
| Organo Republic Winter Seed Pack | Growing a range of vegetables | 50 packets, including Walla Walla |
| Sow Right Seeds Walla Walla | Sweet onions for fresh use | Growing and spacing details provided |
Sow Right Seeds Long Day Onion Collection
Best for: Gardeners who want to compare several long-day onion types or stagger their culinary choices. The collection includes Yellow Sweet Spanish, Ringmaster, Ruby Red, Ailsa Craig, and Walla Walla seeds, with at least 500 mg per packet.
The listed growing guidance says seeds germinate in 7–15 days when soil is 50–70°F. Plant in full sun; the stated maturity range is 95–120 days. The mix of varieties and colors is useful for cooks who want onions for salads, sandwiches, salsa, and other dishes.
Limitation: This is a multi-variety collection, not a single-cultivar packet. Choose a dedicated variety if you want to grow only one kind of onion.
Sow Right Seeds Ruby Red Onion
Best for: Gardeners looking specifically for red long-day onions with a spicy, savory flavor. The packet contains at least 500 mg, or about 160 seeds, and the variety produces medium-to-large globe-shaped bulbs.
Product guidance specifies sowing 1/4 inch deep and spacing plants 4–6 inches apart in full sun. Germination is listed at 7–15 days in soil at 50–70°F, with maturity in 110–125 days. The product states that bulbs can store for up to six months, making this a better storage option than the listed Walla Walla packet.
Limitation: This is a single variety. Choose another product if you want yellow onions or several cultivars in one order.
KVITER Walla Walla Onion Seeds
Best for: Northern gardeners seeking sweet yellow Walla Walla onions. The listing describes these as a long-day variety that forms bulbs with 14–15 hours of daylight, a useful detail when matching seed type to summer conditions.
The product is listed for USDA zones 2–9 and full-sun exposure. It also describes the plants as cold hardy and suitable for spring or fall sowing. Young edible green stems can be picked for cooking, so the crop may provide a use before mature bulbs are ready.
Limitation: The listing does not give a bulb maturity range or planting depth and spacing. Gardeners who want those specifics should consult the packet or a local growing guide.
Organo Republic Winter Vegetable Seed Pack
Best for: Gardeners planning a diverse vegetable plot rather than focusing only on onions. This 50-packet assortment includes Walla Walla, leek, and Tokyo Long White scallion seeds among its many vegetables. It also includes tools, a resealable bag, QR-linked growing guides, and culinary information, according to the listing.
Choose this pack if you want to try several crops and make onions one part of a wider garden plan. The assortment includes vegetables such as lettuce, spinach, cabbage, and radish, so it may suit gardeners seeking variety across meals and planting beds.
Limitation: It is not a dedicated long-day onion seed collection, and the listing does not specify the number of Walla Walla seeds or onion-specific growing instructions.
Sow Right Seeds Walla Walla Onion
Best for: Gardeners who want a dedicated packet of sweet, juicy yellow Walla Walla onions and clear planting measurements. The packet contains at least 500 mg, or about 115 seeds. The listing gives a 110–120-day maturity range and recommends full sun, sowing 1/2 inch deep, and spacing plants 6–8 inches apart.
Germination is listed at 7–15 days in soil at 50–70°F, and the product is designated for USDA zones 3–9. These onions are described as especially suitable for fresh slicing, salads, sandwiches, and salsa.
Limitation: The listing states that Walla Walla has a short storage life. Choose Ruby Red if longer storage is a priority.
Buying Guide: How To Choose Long-Day Onion Seeds
Do long-day onions fit your location?
Long-day onions need extended summer daylight to form bulbs. One listing specifies 14–15 hours of daylight for Walla Walla. Check your region’s seasonal day length and the seed packet’s zone guidance before choosing. Long-day types are generally a better match for northern gardens than for locations with shorter summer days.
Should you buy a collection or one variety?
Choose a collection if you want to grow different colors and types in one season. A single-variety packet is simpler when you have a specific goal, such as red bulbs, sweet Walla Walla onions, or consistent spacing and planting instructions. The Organo Republic assortment is the broadest choice, but onions are only a small part of its crop selection.
What growing details should you compare?
Look for germination temperature, planting depth, spacing, sunlight, and days to maturity. These details help you plan seed-starting and garden-bed space. The supplied product information lists maturity ranges for the Sow Right Seeds collection, Ruby Red, and Walla Walla packet; KVITER’s listing gives daylight and zone guidance but not a maturity range.
Does storage matter?
Consider how you plan to use the harvest. Ruby Red is listed with storage of up to six months, while the Walla Walla packet specifically notes a short storage life. For fresh eating, Walla Walla may suit a plan centered on slicing and salads; for keeping bulbs longer, compare the stated storage information carefully.
Frequently Asked Questions
What are long-day onion seeds?
They are onion varieties that need long summer daylight to trigger bulb formation. Check the variety description and your local day length before planting.
How long do these onion seeds take to germinate?
Several listings specify 7–15 days when soil temperatures are 50–70°F. KVITER lists 7–10 days for its Walla Walla seeds.
How far apart should I plant onion seedlings?
Follow the specific packet instructions. The Ruby Red listing recommends 4–6 inches apart, while the Sow Right Seeds Walla Walla listing recommends 6–8 inches apart.
Which listed onion is best for longer storage?
Ruby Red is the clearest choice based on the supplied details: its listing says bulbs store for up to six months. The Walla Walla packet notes a short storage life.
Can I harvest onion greens before bulbs mature?
KVITER’s listing says its Walla Walla plants have edible green stems that can be picked and used in cooking. Check the packet for harvesting guidance.