Onion Seeds

Grow large, mild onions at home with our premium Yellow Sweet Spanish Onion Seeds. Yellow Sweet Spanish is a classic, long-day variety known for producing large, globe-shaped bulbs with golden skin and a mild, sweet flavor.

Perfect for vegetable gardens, raised beds, and cool-season starts, Yellow Sweet Spanish onions are a reliable choice for home gardeners looking for large bulbs and dependable storage onions. Fresh onions are excellent for grilling, roasting, caramelizing, soups, and everyday cooking.

Onions perform best in full sun with fertile, well-drained soil and consistent moisture. With proper spacing and regular care, Yellow Sweet Spanish plants can produce large, flavorful bulbs by the end of the growing season.

Product Highlights

• Large, globe-shaped bulbs with golden skin
• Mild, sweet flavor for fresh eating and cooking
• Long-day variety suited to northern gardens
• Excellent for grilling, roasting, and caramelizing
• Suitable for vegetable gardens and raised beds
• Performs best in full sun
• Good storage life after curing
• Great for beginner and experienced gardeners
• Days to Maturity: about 100-120 days
• Best Planting Time: start seeds indoors in late winter (8-10 weeks before last frost) or direct sow in early spring

Growing Tip: Start seeds indoors 8-10 weeks before the last expected frost and transplant outdoors once seedlings are sturdy and frost danger has passed, or direct sow as soon as the soil can be worked. Plant in fertile, well-drained soil, provide full sun, keep the soil consistently moist, and stop watering once tops begin to fall over to help bulbs cure.