I simply can't cook without onions and garlic, and since both are winter crops here in central Florida for years I've been obsessively acquiring and trialing various ones in hopes of getting TRULY perennial onions that grow YEAR ROUND and, hopefully, multiply. Two successes so far is a strain of Allium fistulosom I bought as seeds some years back, and "Eliska's Bunching Onion" (which I feel certain is a strain of A. fistulosum that she bought as loose bulbs in a bin at an Ace Hardware). What is very likely a "potato onion" from an East Indian member of the Tampa Rare Fruit Council is reliably perennial for him and Paul Zmoda for years now, but they go dormant in spring and must be dug up else they rot in the summer humid heat. A couple of months ago I bought at a store a small mesh bag of "boiling onions", feeling they were likely immature white onions sold at a premium price. A half hour ago I harvested leaves to add to home made macaroni and cheese....I looked closely: they SEEM to be multiplying! Time will tell if they prove to be perennial.