Onion Long Day Seeds
Plan a northern-style onion harvest with long-day onion seeds from David's Garden Seeds®. This collection features Walla Walla, valued for sweet, mild fresh-use bulbs, and pelleted Patterson, a yellow onion with storage potential when properly grown, matured and cured.
Choose Your Long-Day Onion
- Walla Walla: An heirloom, open-pollinated sweet onion for fresh slices, grilling and other meals. Plan to use the harvest promptly rather than treating it as a long-storage crop.
- Pelleted Patterson: A non-GMO hybrid yellow onion with medium-large bulbs and thin necks that dry during curing. Sound, well-cured bulbs can store under suitable conditions, but keeping quality varies.
- Different seed formats: Patterson's pellets make small seeds easier to see and place. Keep the seedbed evenly moist while the coating softens; pelleting does not guarantee emergence.
Why Day Length Matters
Long-day onions need the longer summer daylight of suitable northern growing regions to form bulbs well. This refers to seasonal day length, not just the hours of direct sunshine in a garden bed. They are not the usual choice for full-size bulbs in southern Texas. Use regional onion guidance and variety-specific planting calendars; hardiness zones alone do not establish suitability.
Planting Tips for Success
- Start at the right time: Allow seedlings time to establish foliage before seasonal day length triggers bulbing. Follow local guidance for indoor sowing, direct sowing and transplanting.
- Do not generalize overwintering: Walla Walla can be overwintered in suitable regions, but this is not a universal planting method or a guarantee based on one temperature threshold.
- Choose full sun: Prepare fertile, loose, well-drained soil and use spacing suited to mature bulbs.
- Plant shallowly: Follow the product's seed depth and transplant directions without deeply burying developing bulbs.
- Water consistently: Maintain even moisture during active growth without waterlogging. Follow crop-stage guidance as bulbs mature.
- Weed carefully: Reduce competition while protecting shallow onion roots.
- Feed thoughtfully: Follow soil-test recommendations and avoid excessive late nitrogen.
Harvest, Cure and Store
Watch for natural top fall and other variety-specific maturity signs. Lift bulbs carefully when conditions permit drying. Cure onions intended for storage in a sheltered, dry, well-ventilated place until necks and outer skins are dry. Store only sound, appropriately cured bulbs and inspect regularly. Use Walla Walla and damaged onions promptly; Patterson's storage potential does not mean every bulb will keep equally well.
Cooking Ideas for Your Harvest
- Fresh slices: Enjoy Walla Walla in salads, sandwiches and burgers.
- Grilled or roasted: Cook wedges or thick slices until tender for a savory side dish.
- Everyday cooking: Sauté Patterson or other harvested onions as a foundation for soups, stews and skillet meals.
- Caramelized toppings: Cook sliced onions slowly for sandwiches, grain bowls and other favorites.
Kitchen suggestions refer to harvested onion bulbs, not planting seeds or pellet coatings. These products are seeds, not onion plants, sets or harvested produce.
Helpful Onion Guides
Why Choose David's Garden Seeds®?
- Veteran-Owned: Supplying premium seeds since 2009.
- GO TEXAN Certified: Supporting local agriculture and communities.
- Integrity Pledge: David's Garden Seeds has taken the Seed Integrity Pledge.
- Vegetable Seed License: David's Garden Seeds has been granted a Vegetable Seed License for the State of Texas.
Order Long-Day Onion Seeds Today
Choose Walla Walla or Patterson for a long-day onion harvest suited to your region.
Browse individual listings for current availability, seed counts, maturity information and growing instructions. Bulb size, yield and storage life vary with growing conditions and care.
Grow something beautiful. Grow something delicious. Grow with David's Garden Seeds®.
