Allium cepa ( New York Early Onion )
onion are a intrepid biennial grown as yearbook . foliage and flower stalk are vacuous and bases swell to spring a electric-light bulb . Bulbs may vary in semblance from snowy , to yellow , or cerise . All Allium cepa can be eat as green onions , but spring , bunching and scallion are grown specifically for their upside . Onions are Clarence Day length sensitive . American and Spanish onions require long days for bulb yield and the Bermuda onion poor days ....