Tall Utah Celery Seeds. There is no doubt that celery is a demanding vegetable to grow. At the same time it is a rewarding vegetable to grow for gardeners with skill, determination and a long growing season. Tall Utah has an early maturity (for celery) and is resistant to bolting under summer stress. Vigorous plants produce nicely flavoured, crisp stalks. Plants reach a mature height of 45 cm (16″).