Mississippi F1 onion is a late hybrid of semi-sweet onion, developed by the Dutch seed company Seminis. This variety is intended for cultivation in open ground in various regions, including Ukraine. The maturation period is approximately 115-125 days from germination to harvest. The plant is characterized by high productivity, good growth vigor, and the ability to increase bulb mass and robust leaf apparatus even under adverse conditions. Bulbs have a round shape, single-lobed, medium size, weighing from 120 to 220 grams, covered with dense, entire scales of dark yellow or golden color. The inner scales of Mississippi F1 onion are thick, fleshy, juicy, and have excellent flavor. The hybrid features high uniformity in bulb shape and size, as well as a dense structure with a fine neck, ensuring an attractive market appearance. The onion is resistant to major diseases, tolerates dry periods and stressful conditions, making it a reliable choice for mechanical harvesting and long-term storage. It is not prone to flowering and maintains fruit freshness for 8-9 months. Successful cultivation of Mississippi F1 onion requires well-aerated soils, moderate root watering, and long daylight hours. The hybrid poorly tolerates shade and waterlogged soil. Due to its resistance to stress and diseases, as well as high yield, this variety is widely used both for market sales and processing and for fresh consumption. Mississippi F1 combines high quality, reliability, and versatility in application.