sugared onions(Allium cepa ) are n’t as biting as other onion due to their humbled sulfur content . They are slender skinned and juicy due to their mellow water subject , and this makes them fragile and more perishable than other onions . All onions are either short daylight , medium daytime or long day . Short - day onions start mold light bulb when the 24-hour interval distance reaches 10 to 12 hour and are good when planted in the Confederate States for the turgid bulb . Long - day onions set out form medulla oblongata when the day duration reaches 14 to 16 hours and are easily establish in the magnetic north . medium - mean solar day onions form bulb at day lengths of 12 to 14 hours and grow best in the central U.S. Onions are hardy in U.S. Department of Agriculture works hardiness zones 3 through 10 .
Yellow Granex
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The " Yellow Granex " onion plant is a myopic - 24-hour interval variety with tan cutis and pallid xanthous to white flesh . It has a flatten globe form . The flavor of the onion changes slightly allot to the conditions in which it ’s grown , and therefore onions grown in different locales are give different names to speciate them . The " Vidalia , " for representative , is a patented variety grown only in a 20 - county area of Georgia , an area of blue elevation and the mild temperature of USDA zone 8 . The " Maui Sweet " is produce in the red , volcanic soils of Maui at in high spirits elevations and under wacky conditions . The " Noonday " is grown within 10 land mile of Noonday , Texas , a little town in the south of Tyler , in USDA zone 8 . Each of these location imparts a insidious savor to the onion plant .
Texas Super Sweet
The " Texas Super Sweet " ( or " Texas Supersweet " ) Allium cepa also go by the name " TX 1015Y. " The 1015 relate to the commend planting engagement of October 15 . This is a forgetful - day character , with yellow cutis and livid flesh . develop by Dr. Leonard Pike at Texas A&M University , this onion is modest enough that it rarely causes the binge associated with some onion . The bulbs grow to about 4 inch across and become sweeter as the bulb matures .
Walla Walla
The " Walla Walla " Allium cepa is large and has yellow skins and white-hot flesh . It is key out for the township and county of Walla Walla in Washington . It is a long - day type and is best get in northern locations . The original Walla Walla seed was reportedly brought to Washington by a French soldier named Peter Pieri from the Gallic island of Corsica in the 1800s . This onion plant is well adapted to the higher EL and cold winters found in this region , often down to 20 grade Fahrenheit .
Other Sweet Onions
sure regions produce their own particular kinds of onion . From California comes the " Sweet Imperial , " originate in California ’s Imperial Valley , and from New Mexico come the " Nu - Mex Sweet " and " Carzalia . " The " Nu - Mex " variety has several sub - sort , such as " NuMex Sweetpak " and " NuMex Arthur , " all releases from New Mexico State University ’s onion plant breeding computer program . From the commonwealth of Chile hails the " Oso Sweet , " an onion that can be enjoyed in the winter months when other sweet onion plant are n’t uncommitted .
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