1. Sweet Onion — General U.S. Category Sweet onions represent a broad category of mild, low-pungency Allium cepa cultivars cultivated across the United States. Morphologically, these onions produce medium to large bulbs with thin, pale yellow to white outer tunics and translucent inner scales. Their defining characteristic is low sulfur content in the soil and … Continue reading Sweet Onions (Allium cepa L.) — Science, Agronomy, and Culinary Uses