90-120 Days to maturity. Allium cepa. Red of Florence Onion Seeds. Also known as Red Long of Florence and Long Red Florence. Non-GMO, Biannual (but can be treated as an annual), open-pollinated, heirloom, oblong, bulbing, long-day onion. Red of Florence onions, also known as Tropea onions, are a specific variety of red onions originating from the town of Tropea in Calabria, Italy. These purplish red oblong bulbs are versatile and delicious in culinary applications. Being a late-season onion, they need lots of time to mature but are well worth the wait. They also overwinter well and can be grown indoors and outdoors with proper light, ventilation, and water. ~9,550 seeds/oz.