Harvest outer stalks first, cutting or snipping them with a garden knife or clippers. Leave the inner stalks to grow for later harvesting for a cut-and-come-again experience all season.
Under optimal conditions, celery can be stored for up to seven weeks between 32 and 36 deg F (0 and 2 deg C).
Every part of a celery plant is edible. Celery seed is actually a very small fruit, and can be used as a flavoring or spice—either whole or ground and mixed with salt. Celery salt is a tasty ingredient in cocktails, on Chicago-style hot dogs, or in Old Bay Seasoning. As an herb celery, this variety has a very intense flavor. It's perfect to use in soups or as a last-touch seasoning. Raw celery is a low-calorie snack, however this type is much more robust and may not have the same application as ribbed celery does. It is, however, the perfect proportion as a flavored stir-stick for your favorite tomato-based drinks.
The early reasons for cultivating celery were for medicinal purposes. Then it was grown as a spice, and finally as a food.