Botanical Interests
Walla Walla Bulb Onion Seeds
Walla Walla Bulb Onion Seeds
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Product Details
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.
- 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 45°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°–85°F.
Days to Emerge: 7–15 days
Seed Depth: ¼"
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.
