Yellow Spanish
Planting Schedule
Sunlit and bold, Yellow Spanish onions bring a bright, golden skin that glows even before you peel—firm, crisp layers promising a sharp, lively bite. At maturity they form generously sized bulbs with a classic flattened-oval silhouette and a dry, papery outer coat that stores beautifully. Grow Yellow Spanish for reliable harvests and for standout flavor in bold, slow-simmered sauces, roasting, and savory pickling preparations.
Crop Dates
| Milestone | Date |
|---|---|
| Last Frost | May 15th |
| Growing Approach | Protected Environment Only |
Crop Details
| Trait | Value |
|---|---|
| Days to Maturity | 110 |
| Sun Requirements | Full Sun |
| Growth Habit | Bulbing |
| Support Needed | None |
| Planting Depth | Normal |
| Germination Temp (°F) | 70 |
| Min Soil Temp (°F) | 55 |
| Min Night Temp (°F) | 28 |
| Harden Off (days) | Not Required |
Today's Conditions
Wait until soil reaches at least 55°F before transplanting Yellow Spanish.
Garden Alerts
Zone 3a has only 109 frost-free days — shorter than this crop's 110-day maturity. Outdoor planting is not viable; use protected cultivation.
Frequently Asked Questions
What pest or disease most commonly affects Allium cepa (yellow Spanish onion), and how can I treat it?
How often should I water yellow Spanish onions during the main growing phase?
How do I tell when yellow Spanish onions are ready to harvest?
Sunlit and bold, Yellow Spanish onions bring a bright, golden skin that glows even before you peel—firm, crisp layers promising a sharp, lively bite. At maturity they form generously sized bulbs with a classic flattened-oval silhouette and a dry, papery outer coat that stores beautifully. Grow Yellow Spanish for reliable harvests and for standout flavor in bold, slow-simmered sauces, roasting, and savory pickling preparations.
Today's Conditions
Wait until soil reaches at least 55°F before transplanting Yellow Spanish.
Garden Alerts
Zone 3a has only 109 frost-free days — shorter than this crop's 110-day maturity. Outdoor planting is not viable; use protected cultivation.
Sowing Tips
Soil Temperature
Direct sow or transplant when soil at planting depth holds 55°F for reliable germination and early growth.
Expert Note
For northern success, transplant young starts into cool soil early, and stop fertilizing nitrogen once bulbs begin to form to keep them sizing up instead of staying leafy.