Heirloom Yellow Sweet Spanish Onion Seeds (.5g) by Patriot Seeds

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Grow large, flavorful onions with Yellow Sweet Spanish—an excellent choice for fresh use, cooking, and long-term storage.

This well-known heirloom variety produces large, sweet bulbs with a mild flavor and reliable yields. Often grown for their size and versatility, these onions perform well in a range of growing conditions and are a practical addition to any garden.

These seeds are 100% heirloom, non-GMO, and open-pollinated, allowing you to grow, harvest, and replant your crop season after season as part of a self-sufficient garden.

Planting Instructions

Onions require consistent conditions and proper spacing to develop full-sized bulbs:

  • Planting Time: Direct sow in early spring once soil can be worked
  • Planting Depth: Sow seeds 1/4 inch deep
  • Spacing: Plant seeds about 1/2 inch apart in rows spaced 12–18 inches apart
  • Final Spacing: Thin to about 1–4 inches between plants depending on desired bulb size
  • Sunlight: Full sun required for best bulb development
  • Soil Conditions: Prefers loose, well-drained soil
  • Moisture: Maintain consistent moisture, especially during early growth
  • Care: Mulch to retain moisture and reduce weeds

Harvesting Instructions

Proper timing is key for both flavor and storage life:

  • Time to Harvest: Approximately 115 days from planting
  • Maturity Indicator: Harvest when tops begin to fall over naturally
  • Curing Period: Leave bulbs in the ground for 10–14 days after tops fall to mature fully
  • Harvest Method: Lift carefully from soil and allow to dry
  • Storage Prep: Cure in a dry, well-ventilated area before long-term storage

Saving Seeds

Saving seeds from onions requires a two-year growing cycle, as they are a biennial crop.

Select strong, healthy bulbs and replant them the following season to produce flower stalks and seed heads. Allow seeds to fully mature and dry on the plant before harvesting.

Once collected, dry seeds thoroughly and store in a cool, dry place. To maintain seed quality, isolate from other onion varieties to prevent cross-pollination.

Heirloom Yellow Sweet Spanish Onion Seeds (.5g) by Patriot Seeds
Heirloom Yellow Sweet Spanish Onion Seeds (.5g) by Patriot Seeds
$2.98

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