Celery is primarily grown in California, although Michigan also grows some Celery.Click to see full answer. Then, where is the most celery grown in the US?California and Michigan produced most of the U.S. celery crop for the fresh market and for processing into canned, frozen and dehydrated products, with California producing the majority of the total crop.Furthermore, what zone does celery grow in? Celery grows as a cool-season crop, so it isn’t suitable in summer gardens in hot climates. In U.S. Department of Agriculture hardiness zones 8 through 10 where summer temperatures can get quite high, celery is more suitable as a fall or spring crop. Considering this, where is celery best grown? The main features this crop requires are rich soil, plenty of water, and protection from hot sun and high temperatures. Grow celery as a winter crop in the South, a summer crop in the far North, and a fall crop in most other areas.Which state produces the most Onion?California is the largest onion producer in the US, and is the only state to produce both spring and summer-harvested onions. In 2015, it produced 31% of the nation’s total onion crop. For summer-harvested onions other important producers are Washington and Oregon.