- Onion Seeds: Walla Walla onions belong to the species Allium cepa and are classified as long-day onions, requiring 14-16 hours of daylight to form their signature large, sweet bulbs, making them ideal for northern growing regions.
- Origin and Nicknames: Originating from Walla Walla, Washington, these onions are often nicknamed "Walla Wallas" or "Washington’s Sweet Onions" due to their mild, juicy flavor, which sets them apart from sharper onion varieties.
- Appearance and Flavor: Known for their large, globe-shaped bulbs with light brown to golden skin, Walla Walla onions have crisp, white flesh that delivers a sweet, non-pungent taste, perfect for raw consumption in salads or sandwiches.
- Care and Harvest: These onions thrive in fertile soil with a pH of 6.2-6.8, need consistent moisture (about 1 inch of water per week), and should be harvested when tops yellow and fall over, followed by curing in a dry, ventilated area for 2-4 weeks to enhance storage life.
- Quality: All Onion seeds packaged by Seed Needs are intended for the current and the following growing seasons. All seeds are stored in a temperature controlled facility that is free of significant amounts of moisture.
- Quantity: Seed Needs offers generous quantities. You can share with friends and family, or you can save the extra seeds until the following season, if properly stored.
- Packets: Each seed packet displays an artful illustration of the variety to be grown, as well as detailed seed sowing information on the reverse side. They measure 3.5" wide by 5" tall.
- Promise: Seed Needs will never knowingly supply GMO based seed products. The vast majority of our seeds are open pollinated & heirloom, with the exception of a few hybrids.
- Germination: Seed Needs packets contain some of the freshest seed available. Direct from the growers. If sown correctly, you will begin seeing results in only a matter of days.
- Freshness: All seeds are packaged in tear resistant and moisture resistant packaging. This keeps the seeds a whole lot fresher than the competitions selection!
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Seed packets by Seed Needs are beautifully illustrated and provide a colorful depiction of the variety inside. We provide the common name, as well as the scientific name, seed quantity and a few specs about the variety to be grown.
Each packet contains full growing instructions on the reverse side. Specifications on sowing the seed, growing conditions such as sunlight and moisture preferences and germination and growth information can be found as well.
We also provide a QR code to scan for easy reordering.
Grow Walla Walla onions from freshly harvested Allium cepa seeds. Walla Walla is an heirloom variety of onion that produces extra large, white bulbs with light brown skin. Famous for their sweet and mild flavoring, these onions have become one of our best sellers. Walla Walla is a cold hardy variety, however they do not store very well. They have become suitable for Northern gardeners, as well as the Pacific Northwest.
Walla Walla bulbs grow to a mature size of roughly 4 to 6 inches in diameter, weighing in at roughly 1 to 2 pounds. The green tops are about 20 to 24 inches tall and can be used as scallions. Add them to green salads and potato salads, or even add them into soups, stir fry & casseroles. The onions themselves are popularly added to stir fry as well and can also go great with burgers, salads & sandwiches. You might also consider adding them to the toppings list on your next home made pizza. It it recommended that you lightly cook Walla Walla onions for the best flavoring, also enjoying them raw.
Onions are best started indoors, 8 to 12 weeks prior to the last frost. In some Northern regions, it may be best to even begin sowing in the month of December. Having said that, sow your black onion seeds directly to the surface of the soil. Cover with a quarter inch of topsoil. Transplant early bulbs into the garden when the weather is warm enough to work the soil.
Onions are a cool weather crop, so they thrive in the early months of Spring and the late months of Fall. Ideal temperatures should stay beneath 70F, but above 55F. You will also want to provide an area of full sunlight for the majority of the day. The soil should be friable, fertile, as well as loose and free of all rocks or gravel. You will also want to make sure that your sowing medium is well drained as well. To increase drainage, we recommend adding a light compost to areas containing hard, compact soil. Water the seeds daily so that the soil remains moist, but avoid drowning or overwatering.
Onions typically begin germinating in about 7 to 14 days after sowing. The green tops will grow to roughly 20 to 24 inches tall, producing 2 pound bulbs. Onions can be spaced roughly 4 to 5 inches apart from one another, in rows spaced 12 to 18 inches apart. The tops can be used in soups, on salads and in casseroles as well. The onions themselves are enjoyed raw on burgers & sandwiches, cooked in stir fry, or added to a freshly made pizza.
