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Botanical Interests

Walla Walla Bulb Onion Seeds

Walla Walla Bulb Onion Seeds

Regular price $3.49
Regular price Sale price $3.49
0.5 g
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Product Details

Famous for it's juicy sweetness, 'Walla Walla' onion seeds traveled from the coast of Italy to Walla Walla, Washington. One of the best onions to enjoy fresh! Long-day onion, but can be grown as an intermediate-day onion because it matures early. High yield and enormous bulbs, make sure to use shortly after harvest.

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  • Variety Info
  • Sowing Info
  • Growing Info

Variety Info

Days to Maturity: 100–125 days

Family: Alliaceae

Type: Long-day sweet onion. (Learn more)

Native: Exists only in cultivation

Hardiness: Biennial grown as an annual

Exposure: Full sun

Plant Dimensions: 4" to 6" slightly-flattened bulbs with 6" to 10" tops

Variety Info: Yellow, slightly flattened, globe onion, 4"–6" in diameter and weighing around 2 lbs. with dry, papery skin and 6"–10" tops. 'Walla Walla' is a bulbing, yellow, long-day, sweet onion with a short storage period.

Attributes: Frost Tolerant

Sowing Info

When to Sow Outside: 4 to 6 weeks before your average last frost date, or as soon as soil can be worked; when soil temperature is at least 45Β°F.

When to Start Inside: RECOMMENDED. 10 to 12 weeks before your average last frost date. Transplant outdoors 4 to 6 weeks before your average last frost date. The earlier the start, the bigger the bulb. Ideal soil temperature is 60°–85Β°F.

Days to Emerge: 7–15 days

Seed Depth: ΒΌ"

Seed Spacing: A group of 2 seeds every 6"–8"

Row Spacing: 12"–16"

Thinning: When 2" tall, thin to 1 every 6"–8"

Growing Info

Harvesting: When onion tops have fallen over and turned yellow or brown, they are ready for harvest. Harvest in the morning, lifting onions with a garden fork. Dry them in the garden in the sun for 2 to 3 days, lightly covering the bulbs with straw, or the tops of other onions to prevent sunscald. Cure onions for 3 to 7 days in a dry area with good air circulation. Once dry, cut the roots to 1/4", and the greens to 1" to create a seal, preventing decay.