Long red Florence Onions Seeds Produce A Mild Sweet Flavoured Onion That Can Either Be Pulled Young As Spring Onions Or Allowed To Mature For August Cropping.the Elongated Bulbs Have A Red Skin & Are Ideal For Casseroles Or Salads.did You Know: that Onion Red Florence Is Classed As A ""banana Shallot"". This Term Is Often Used By Cooks To Describe The Long Bulb Varieties Of Onions & Shallots. It Is More Of A Cooking Term Than One Used By Gardeners.