Onion White Sweet Spanish

The white sweet Spanish onion is a large, shiny, and soft variety that ripens in 110-120 days.
Spain is the leading onion producer and consumer in Western Europe. White Spanish onions are comparable to yellow Spanish onions but have less sharpness. Option for dishes that require a light onion flavor, such as creamy sauces and light broths.
Onions have many health benefits. Spanish onions contain anti-cancer compounds associated with the amount of sulfur. In addition, onions control blood sugar levels. Because of their antimicrobial properties, onions are considered to fight harmful diseases such as E. coli.


How to grow White Sweet Spanish Onion from seeds:

  • Sowing: You can plant White Sweet Spanish onion seeds indoors as the onions take several months to ripen. Plant the seeds 1/2″ 2-3 months before the last frost date. Keep the soil moist and at a comfortable temperature. It would be best if you cut the top to 3″ to focus growth on the roots. 4 weeks before the last frost and at a soil temperature of 50 degrees F, transplant the seеdlings 6" apart in rows 12" apart. Sow three seeds per inch 1/2″ dеep directly in light, rich soil, and full sun. Cut the seedlings 2-6″ apart, depending on the desired size. Thinned onions can be transplanted or used fresh. Onions are a companion plant, so it is beneficial to plant them next to representatives of the cabbage family, lettuce, or tomatoes. Avoid planting onions with legumes, green peas, and beans. In regions with warmer winters, onions can be grown in autumn and winter.
    • Plant Spacing: 3-4″.
  • Growing of White Sweet Spanish Onion: Onions are hygrophilous. Young seedlings need constant watering, especially in the first few weeks of growth. To make it easier for onions to grow, remove weeds on time. A layer of mulch can help keep the soil moist and slow weed growth. Walla Walla onions tolerate cold weather well.
    • White Sweet Spanish Onion Soil Requirements for: Well-drained, moist.
    • White Sweet Spanish Onion Seeds Days to Germination: 10-12 days.
    • Light Preference of White Sweet Spanish Onion: Full Sun.
    • Life Cycle of White Sweet Spanish Onion: Annual.
  • How and When to Harvest White Sweet Spanish Onion:  The onions are ready to harvest when the tops turn yellow or flop over. Remove the onion from the ground, peel off the dirt and let it dry for a week in the sun or a dry, well-ventilated place. When the peel is dry, trim the tops to 1 inch and cut the rоots. Store in a cool, dry place. Walla Walla оnions do not store well for a long time.
  • White Sweet Spanish Onion Days to Maturity: up to 120 days.
  • White Sweet Spanish Onion's Seed Saving: Onions produce seeds after overwintering. In warm regions, a thick layer of mulch is sufficient, which should be removed in early spring. In cold winters, scoop up the onion, cut half the stem, and store at 32-40 degrees F in a dry plаce until spring. Cut the top of the onion with a cross before planting to make it easier for the stem to germinate. Plants will bloom and give seeds. Remove the seed heads of the Walla Walla onions when the seeds are visible and allow them to dry for a few weeks. Thresh thе seeds and store them in a cool, dry place for up to 2 years.


  • Latin Name: Allium cepa
  • Type: Open Pollinated, Heirloom, Cool Season|Warm Season
  • USDA Zones: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • Seeds per Ounce: 8,000
  • Planting Method: From Transplant
  • Sunlight: Full Sun
  • Height: 24 Inches
  • Color: White


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