Exceptionally long-storing yellow onion. Patterson has the same firmness and storage qualities as Copra, with a larger size, better uniformity, and higher yield potential. Medium-large, blocky bulbs with dark yellow skin and thin necks that dry quickly. Adaptation: 38–55° latitude. Also available as plants and in conventional seed with NOP-compliant pelleting. Avg. 100,000 seeds/lb. Packet: 250 seeds. SCIENTIFIC NAME:Allium cepa 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. 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. TRANSPLANTING:In short-season areas, sow seeds indoors in flats in late February to mid-March. Broadcast 1/2" apart and cover 1/4". Tops may be clipped to 5" tall. Transplant to the garden 4" apart, or sow 5 seeds in each cell of 1–1 1/2" diameter plug trays, thinning to 3 per cell. Transplant each cell 6" apart. CULTIVATION:Keep onions well weeded with shallow cultivation. WATER:Onions are shallow-rooted and grow best with at least 1" per week of rain or irrigation, especially during the bulbing phase. DISEASES:Adequate air circulation and crop rotation aids in reducing the risk of foliar disease. HARVEST:When necks become soft and tops are falling over, pull and sun-cure at least 2–7 days, depending on weather. Move to a protected location to finish drying. STORAGE:When dry, clip off tops and roots and store in onion bags or shallow boxes at near freezing and 65–70% humidity. 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. DAYS TO MATURITY:From direct seeding; subtract 10–15 days for days to maturity from transplant. AVG. DIRECT SEEDING RATE:1 oz./25', 1M/50', 5M/250', 25M/1,250', 580M/acre @ 20 seeds/ft., in rows 18" apart. TRANSPLANTS:Avg. 1 oz./4,900 plants, 1 lb./78,750. SIZED SEEDS:Standard on all varieties. SEED SPECS:SEEDS/LB.: 96,900–127,700 (avg. 112,000). PACKET:250 seeds, sows 12' or makes 140 plants.