White Sweet Spanish Onion

Type: Open-pollinated
Day Length: Long-day
Packet size: 20 seeds

Allium cepa. White Sweet Spanish Onion is a classic open-pollinated onion variety known for producing large, attractive globe-shaped bulbs with white skin and crisp white flesh. The bulbs have a mild, sweet onion flavor that makes this variety especially versatile in the kitchen.

White Sweet Spanish is a long-day onion best suited to northern growing regions where summer days are long enough for good bulb development. The large white onions are excellent for fresh slicing, sandwiches, salads, burgers, salsas, grilling, sautéing, roasting, soups, and everyday cooking.

The mature bulbs can be cured after harvest for storage, making White Sweet Spanish a useful variety for gardeners who want both fresh onions during the season and onions to keep for later use.

🌱 Growing Information

How to Grow White Sweet Spanish Onion from Seed

Planting Depth: ¼ inch
Seed Spacing: 2–3 inches
Row Spacing: 12–18 inches
Germination Time: 7–14 days
Days to Harvest: 100–120 days
Sun Requirements: Full Sun

Planting Tips:
Start White Sweet Spanish Onion seeds indoors 8–10 weeks before the last frost, or sow directly outdoors once the soil can be worked. Grow in fertile, well-drained soil and full sun. Thin seedlings to provide adequate room for bulb development.

Harvest when the tops begin to yellow and fall over. Allow mature onions to cure in a dry, well-ventilated location before storing.

🧅 Large White Long-Day Onion: White Sweet Spanish produces large, globe-shaped white onions with crisp flesh and mild, sweet flavor. An excellent choice for fresh eating, cooking, and home garden harvests.