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Product Description:

125 days when spring sown. When fall sown and allowed to overwinter, the round globes often attain a 5-6 inch diameter. For those of you in harsher climates, this onion can be spring sown. Start them early and transplant out as soon as the soil can be worked. The bulbs will be smaller, 2 ½-3 inches across, but they'll have the same sweet flavor. Plan to use quickly as they're not meant for long-term storage. Sweet type; stores 1-2 months. Long-day variety.

Tips for overwintering: Sow seed at the beginning of August. Once they are large enough, around mid-October, transplant into the garden. You can harvest green onions until April. In May they will begin to bulb and will be ready to harvest as dried down bulbs by mid to late-June.
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Customer Reviews

Based on 2 reviews
Jerry B.

Unlike Molly's, our Walla Walla onions were excellent. From seed we planted some in the late fall and some in spring (starting indoors) and both were huge and sweet. The fall planted ones ripened sooner by a month or so. We live on the south coast of Oregon.

Molly h.
Not sweet, made my eyes water

I have grown your Walla Walla sweet seed for more years than I can remember. They have always been very sweet. This year "23"� I didn't have a sweet one in the bunch. I also grow Patterson, Red Bull, Cartland, and Talon as winter keepers. My walla walla even made my eyes water, not so with the rest. They still put out green tops by September. I will try again this year and hope they aren't getting them from the same supplier.

Sorry to hear you didn't enjoy Walla Walla onions this year. There are a few factors that could impact onion flavor: inconsistent watering (especially if they didn't get enough water), incorrect fertilization (specifically the amount and type of fertilizer given), or high temperatures. Hoping your next batch do better for you, please let us know if there's anything we can do to help!

Soil Temp for Germ 50–75°F
Seed Depth ⅛–½"
Seed Spacing 2–4/inch
Days to Emergence 6–16
Thin Plants to 2–7"
Row Spacing 12–24"
Fertilizer Needs Medium
Minimum Germination 75%
Seeds per Gram ≈ 200
Seed Life 1 year

Allium cepa Days to maturity are calculated from date of direct seeding.

• Onions are photoperiodic plants — they regulate their stages of growth by day length
• Onions will make top growth until the critical light duration is reached, then bulbing begins
• The amount of growth and development prior to bulbing will determine the bulb size
• Long-day varieties do well in northern states where summertime day length is between 14-16 hours
• Short-day varieties do well in southern states and bulb when day length is 10-12 hours; they won't get very large in northern states
• Dividing line between short-day and long-day varieties is generally accepted as 36° latitude, roughly along the Kansas/Oklahoma border
• Day-neutral and intermediate-day varieties start bulbing when day length is 12-14 hours; can be successfully grown anywhere
• Onions prefer light, sandy, loamy soils
• Apply 1/4-1/2 cup of TSC's Complete fertilizer per 5 row feet, 1-2 inches below transplant or seed

Direct Sowing
• Thin to the strongest plant when 4-5 inches

• Sow up to 10-12 seeds in a 4-6 inch pot
• If tops reach over 5 inches before transplant, cut to 3 inches
• When planting out carefully separate the seedlings and place in a shallow trench
• Fill trench around seedlings and water in well

Insects & Diseases
• Common insects: Onion thrips and maggots
• Insect control: Pyrethrin or Predatory Nematodes
• Common diseases: Fusarium basal rot, pink root
• Disease prevention: 5-7 year crop rotation

Harvest & Storage
• For scallions: harvest when pencil size or larger, wash and trim roots, store in a bag at 36°F and 95% relative humidity
• As bulbs approach maturity, withhold water so protective paper can form
• After about half the tops have fallen, push over the remainder; wait about 1 week then harvest
• Cure in a warm (75-80°F), shaded, well-ventilated location until outer skin and necks are dry, then trim tops, leaving one inch above the bulb
• Store in a cool, dry, well-ventilated area
• Check occasionally and immediately remove any sprouting or rotting onions

What is pelleted seed?
Seed that has been coated with a clay-based material to form a larger, round shape. This makes planting by hand or mechanical seeder easier and allows for more controlled sowing of small seeds such as carrots or lettuce. All pelleted seed has a National Organic Program (NOP) approved coating.
For best results, store pelleted seed in an air-tight container and use within one season.

What is seed tape?
Seed tapes are perfectly straight rows of precisely spaced crops. No more having to thin seedlings! This biodegradable tape will plant a row 5 meters (16 feet, 5 inches) long. Simply lay it in a furrow and cover with a light layer of sifted compost or soil, water and wait. Save yourself a heap of planting time with these popular vegetable and herb staples.

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