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Big, mild white onions.
Widely adapted, day-neutral, and matures well anywhere in North America from spring sowing. Suitable for fall planting where short-day onions are normally grown. Produces uniform, large, white-skinned onions with mild flavor and thick rings. Not for long storage. Sierra Blanca is the same variety as Super Star. It has been renamed by the breeder. AAS winner. Also offered as plants and as conventional seed with NOP-compliant pelleting.
Disease Resistance:
- Pink Root (Intermediate)
Specs:
- Packet: 250 seeds
- Avg. 117,800 seeds/lb
| Size | Packet, 1,000 Seeds, 5,000 Seeds, 25,000 Seeds, 100,000 Seeds |
|---|---|
| HARVEST | When necks become soft and 50% of tops are falling over, pull and cure in well-ventilated space out of direct sunlight (to prevent greening) or sun-cure in field for 2–7 dry days before moving to dry location. Cure until tops are completely dried; about 2 weeks. |
| SEED SPECS | SEEDS/LB.: 96,900–127,700 (avg. 112,000). |
| SIZED SEEDS | Standard on all varieties. |
| TRANSPLANTS | Avg. 1 oz./4,900 plants, 1 lb./78,750. |
| AVG. DIRECT SEEDING RATE | 1 oz./25', 1M/50', 5M/250', 25M/1,250', 580M/acre at 20 seeds/ft., in rows 18" apart. |
| DAYS TO MATURITY | From direct seeding; subtract 10–15 days for days to maturity from transplant. |
| STORAGE | When dry, clip off tops and roots and store in onion bags or shallow boxes at near freezing and 65–70% humidity. |
| DISEASES | Adequate air circulation and crop rotation aids in reducing the risk of foliar disease. |
| SCIENTIFIC NAME | Allium cepa |
| WATER | Onions are shallow-rooted and grow best with at least 1" per week of rain or irrigation, especially during the bulbing phase. |
| CULTIVATION | Keep onions well weeded with shallow cultivation. |
| TRANSPLANTING | In long- and intermediate-day areas, sow indoors 6–8 weeks before last frost date. Sow 128-cell trays, 1 seed/cell, and cover with 1/4" soil. Transplant 4" apart in rows 12–18" apart. Unruly tops may be clipped to 5" at time of transplant. |
| DIRECT SEEDING | In April or early May, or as soon as the soil can be prepared in early spring, sow in a 2" wide band, about 2 seeds/in., 1/4– 1/2" deep, rows 12–18" apart. Thin to 1 1/2–2" apart for highest yields in fertile soil. Thin to 3-4" apart for larger onions. |
| DAY LENGTH | Onion bulbing is triggered by day length, and maximum day length during the growing season increases from south to north. Short-day onions are grown at lower latitudes in the South, while intermediate and long-day onions are grown at higher latitudes. Refer to "Adaptation" in each variety description for details. |
| CULTURE | Onions require full sun and fertile, well-drained soil with a pH of 6.0–7.0. Sandy loam soils are ideal; in heavier soils, use raised beds or raised rows to promote soil drainage. |
| PACKET | 250 seeds, sows 12' or makes 140 plants. |
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