Utah Yellow Sweet Spanish Onion Seeds – 50 Heirloom Long Day Garden Bulbs

Utah Yellow Sweet Spanish Onion is a classic heirloom variety prized for its large, globe-shaped bulbs and mild, sweet flavor. These long-day onions are a favorite for home vegetable gardens, producing thick, golden-yellow skin and crisp, white flesh that is excellent for fresh eating, slicing, and cooking. Whether you are growing onions for storage or for immediate use, this reliable variety delivers consistent results in northern regions.

Easy to grow from seed, Utah Yellow Sweet Spanish Onions thrive in full sun and well-drained soil. They are a versatile addition to any garden bed, raised bed, or container, and their bulbs can be harvested in late summer to early fall. With proper curing, these onions store well for months, making them a practical and rewarding crop for gardeners of all experience levels.

Plant Features

• Heirloom long-day onion variety
• Large, globe-shaped bulbs with golden-yellow skin
• Mild, sweet flavor ideal for fresh and cooked dishes
• Excellent storage quality when properly cured
• Reliable producer in northern gardens

Growing Information

• Botanical Name: Allium cepa
• Plant Type: Biennial grown as annual
• Sunlight: Full sun
• Soil: Well-drained, fertile soil
• Water Requirements: Moderate; keep soil consistently moist
• Growth Habit: Upright, bulb-forming
• USDA Hardiness Zones: 3-9 (long-day variety best in northern zones)
• Bloom Season: Not typically grown for blooms
• Mature Height: 18-24 inches
• Germination Requirements: 7-14 days at 65-75°F
• Spacing: 4-6 inches apart

Planting & Care

Start Utah Yellow Sweet Spanish Onion seeds indoors 8-10 weeks before the last frost date, or direct sow in early spring as soon as the soil can be worked. Plant seeds 1/4 inch deep in a sunny location with well-drained soil. Keep the seedbed evenly moist until germination. Once seedlings are sturdy, thin them to 4-6 inches apart to allow proper bulb development.

Onions require consistent moisture during the growing season, but reduce watering as bulbs mature to prevent rot. Mulch around plants to suppress weeds and retain moisture. Harvest when tops begin to yellow and fall over. Cure bulbs in a warm, dry, well-ventilated area for 2-3 weeks before storing in a cool, dark place.

What's Included

50 Utah Yellow Sweet Spanish Onion seeds.