Yellow Sweet Spanish Utah Bulb Onion Seeds
Yellow Sweet Spanish Utah Bulb Onion Seeds
SKU: #0291
The 'Sweet Spanish' onion was grown in the U.S. at least as far back as 1916. 'Yellow Sweet Spanish Utah' is from that early type, producing large, 3"–6" globe-shaped bulbs with amazingly mild, sweet flavor. A long-day variety, it grows best in states north of the 37th parallel. Utah designated this onion the state vegetable in 2002. Caramelize onions for the perfect patty melt condiment.
0.75 g
(~180 seeds)
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- Variety Info
- Sowing Info
- Growing Info
- Learn More
Variety Info
Days to Maturity: 110–130 days
Family: Alliaceae
Type: Long-day sweet storage onion. (Learn more)
Native: Exists only in cultivation
Hardiness: Biennial grown as an annual
Exposure: Full sun
Plant Dimensions: 3 1/2" to 6" globe-shaped bulbs with 12" to 16" tops
Variety Info: Large, 3 ½"–6", up to 2 lbs., pale yellow, globe-shaped bulbs with coppery wrapper; 12"–18" tops. 'Yellow Sweet Spanish Utah' is a bulbing, yellow, long-day onion with a moderate 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.