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Walla Walla Onion Seeds – Heirloom Long-Day Variety for Extra-Sweet, Juicy Yellow Bulbs

Heirloom - Non-GMO - Reliable Germination

$3.49 USD
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Size: 1 Packet

What Makes Survival Garden Seeds Different - non-GMO heirloom seeds

Grow one of the sweetest onions available with Walla Walla Onion Seeds from Survival Garden Seeds. As the official state vegetable of Washington, this heirloom long-day variety is known for producing exceptionally sweet, crisp, juicy bulbs. Walla Walla thrives in northern climates and can be planted in fall for large, full-size bulbs or in early spring for smaller but even sweeter harvests.

Washington’s Famous Long-Day Onion:
Walla Walla onions have long been celebrated in the Pacific Northwest for their mild flavor and dependable performance. This yellow onion develops best under long-day summer conditions, making it an excellent fit for northern growers. Fall planting allows bulbs to overwinter and size up to 5–6 inches, while spring planting yields smaller 3-inch bulbs with heightened sweetness.

Exceptionally Sweet, Crisp Flavor:
Walla Walla onions are prized for their juicy texture and naturally sweet flavor. These golden-brown bulbs are ideal for fresh eating, grilling, sautéing, and any dish where mild onion flavor shines. Their sweetness and crisp bite make them a standout choice for home gardeners who value high culinary quality.

Why Customers Love Walla Walla Onion:

  • Famous heirloom with outstanding sweetness
  • Yellow, juicy bulbs up to 5–6 inches when fall-planted
  • Performs best in northern long-day climates
  • Crisp texture ideal for fresh and cooked dishes
  • Flexible planting options for size and flavor preferences

How to Grow:
Start seeds indoors 8–10 weeks before your planting date or sow directly outdoors in early spring. In mild northern regions, plant in fall to overwinter for larger bulbs. Choose full sun and loose, well-drained soil for best growth. Keep beds evenly moist, thin seedlings for proper spacing, and maintain weed-free conditions. Harvest when bulbs reach full size and tops begin to fall naturally.

Net Wt. 500MG

Heirloom Vegetable Seeds

All of our seeds are open-pollinated, non-GMO, heirloom varieties with tested germination rates

Specifications

  • Botanical Name
    Allium cepa
  • Planting Zones
    3-6, Northern 7 & 8
  • Light
    Full Sun
  • Soil Temp for Germination
    75 Degrees F
  • Germination Time
    8-10 Days
  • Planting Depth
    1/2 Inch
  • Plant Size
    12-18 Inches Tall, 6-8 Inch Spread
  • Days to Harvest
    115 Days
  • Growing Instructions
    Start indoors 8-10 weeks before last average frost date, or sow directly outside once the ground can be worked. Keep evenly moist until well established. Trim back to 3 inches to focus growth in roots. Plant seedlings 2 inches deep and space 4-6 inches apart.
  • Seed Saving Instructions
    Onions are biennial and produce flowers in the second year. In autumn, mulch heavily or pull up chosen bulbs to replant in spring. Once flowering heads begin turning brown, clip and place in a paper bag. Dry for several weeks, then shake to release. Separate and store in a cool dry place.
  • Seed Count (approximate)
    99 to 140

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Why Choose Survival Garden Seeds

At Survival Garden Seeds, we believe in preparing today for tomorrow’s peace of mind. That’s why we offer only heirloom, non-GMO, and untreated seeds you can trust to nourish your family and support a sustainable lifestyle. As a family-owned American company, we’re committed to providing seeds that grow strong and true—helping you cultivate health, resilience, and beauty in your garden.

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Frequently Asked Questions

Are your seeds heirloom and open-pollinated?

Yes. All of our seeds are heirloom, open-pollinated varieties, which means they can produce seeds that grow true to type and are suitable for seed saving.

You can learn more about open-pollinated, heirloom, and non-GMO seeds in our Survival Garden Training blog.

Are your seeds non-GMO?

Yes. All Survival Garden Seeds are 100% non-GMO. Our seeds are open-pollinated heirloom varieties and are never genetically modified.

Are your seeds treated with chemicals?

No. Our seeds are completely untreated and free from chemical coatings, fungicides, or synthetic treatments.

How do I know my seeds are fresh?

Every seed packet includes a packed-for date, and we germination-test each seed lot before packaging to ensure high viability.

What is the shelf life of your seeds?

Most seeds remain viable for 3 to 5 years or longer when stored properly in a cool, dry place away from light and moisture.

In what USDA hardiness zones can I grow your seeds?

Our varieties are selected to grow successfully across USDA Hardiness Zones 3 through 10. Each packet includes variety-specific planting guidance and germination tips.