White Grano
95d to harvest
Sweetly fragrant and delicately mild, White Grano forms pristine, ivory-white bulbs with a crisp, fine-grained snap and a clean, juicy bite. At maturity, the skins stay smooth and tight, making the bulbs ideal for fresh use as well as roasting until they turn tender and caramel-kissed. Grow White Grano for a refined, market-class white onion that shines in salads, savory sauces, and pickled preparations alike—its gentle flavor keeps every dish bright and balanced.
Crop Dates
Growing note: In frost-free Zone 12b, grow this cool-season crop during the cooler dry season (October–February).
| Milestone | Date |
|---|---|
| Start Indoors | — |
| Climate | Frost-Free Climate |
| Transplant / Sow Outdoors | Oct 1st |
| Harvest Begins | Jan 4th |
| Harvest Ends | Feb 28th |
Crop Details
| Trait | Value |
|---|---|
| Days to Maturity | 95 |
| Sun Requirements | Full Sun |
| Growth Habit | Bulbing |
| Support Needed | None |
| Planting Depth | Normal |
| Germination Temp (°F) | 70 |
| Min Soil Temp (°F) | 45 |
| Min Night Temp (°F) | 28 |
| Harden Off (days) | 6 |
Recommended Companions
Frequently Asked Questions
White Grano (Allium cepa): How do I prevent and manage onion downy mildew (Peronospora destructor) and other foliar fungal issues?
Onions (Allium cepa) are very prone to downy mildew when weather stays cool and humid, causing gray-purple fuzzy growth on leaves and tip dieback. Water only at the soil line and space plants so leaves dry quickly; remove and discard badly infected leaves early. If it keeps spreading, switch to a labeled fungicide for onions and re-apply according to the label interval, starting at the first signs (often in wet spells).
White Grano onion: How often should I water during the main growing phase to keep bulbs forming well?
During bulb formation, keep soil consistently evenly moist but not soggy—aim for about 1 inch of water per week, adjusted for your rainfall and heat. Let the top 1–2 inches dry slightly between waterings to avoid rot, especially around the crown. Stop or sharply reduce watering about 2–3 weeks before harvest so the necks dry down and bulbs cure properly.