Celery has become a common household staple along with carrots, onions and potatoes. Its crunchy texture and distinctive flavor makes it a popular addition to salads and many cooked dishes. Although it is available throughout the year, you will enjoy the best taste and quality of celery during the summer months when it is in season and locally grown varieties can be easily found in the markets.

Celery grows to a height of 12 to 16 inches and is composed of leaf-topped stalks arranged in a conical shape that are joined at a common base. It is a biennial vegetable plant that belongs to the Umbelliferae family whose other members include carrots, fennel, parsley and dill. While most people associate celery with its prized stalks, the leaves, roots and seeds can also be used as a food and seasoning as well as a natural medicinal remedy.

Celery contains vitamin C and several other active compounds that promote health, including phthalides, which may help lower cholesterol, and coumarins, that may be useful in cancer prevention.

Celery is an excellent source of vitamin C, a vitamin that helps to support the immune system. Vitamin C-rich foods like celery may help reduce cold symptoms or severity of cold symptoms; over 20 scientific studies have concluded that vitamin C is a cold-fighter. Vitamin C also prevents the free radical damage that triggers the inflammatory cascade, and is therefore also associated with reduced severity of inflammatory conditions, such as asthma, osteoarthritis, and rheumatoid arthritis. As free radicals can oxidize cholesterol and lead to plaques that may rupture causing heart attacks or stroke, vitamin C is beneficial to promoting cardiovascular health. Owing to the multitude of vitamin C's health benefits, it is not surprising that research has shown that consumption of vegetables and fruits high in this nutrient is associated with a reduced risk of death from all causes including heart disease, stroke and cancer.

Celery's potential for reducing high blood pressure has long been recognized by Chinese medicine practitioners, and Western science researchers may have recently identified one reason why.

Celery contains active compounds called phthalides, which can help relax the muscles around arteries and allow those vessels to dilate. With more space inside the arteries, the blood can flow at a lower pressure. phthalides also reduce stress hormones, one of whose effects is to cause blood vessels to constrict. When researchers injected 3-n-butyl phthalide derived from celery into laboratory animals, the animals' blood pressure dropped 12 to 14 percent. Of course, injection of a celery extract into laboratory animals is very far from food consumption by humans, and the researchers participating in this as yet unpublished study cautioned against overindulging in celery until clinical trials could be conducted with food and humans. But the potential helpfulness of this already nourishing food in lowering blood pressure seems likely, and it doesn't hurt that celery ranks as a very good source of potassium and a good source of calcium and magnesium, because increased intake of these minerals has also been associated with reduced blood pressure.

Celery is a biennial vegetable (meaning it has a normal life cycle of two years) that belongs to the Umbelliferae family, whose other members include carrots, fennel, parsley and dill. While most people associate celery with its prized stalks, its leaves, roots and seeds are also used as a food and seasoning as well as a natural medicinal remedy.

Celery grows to a height of 12 to 16 inches and is composed of leaf-topped stalks arranged in a conical shape and joined at a common base. The stalks have a crunchy texture and a delicate, but mildly salty, taste. The stalks in the center are called the heart and are the most tender. In the United States, we are used to celery appearing in different shades of green, but in Europe they also enjoy a variety that is white in color. Like white asparagus, this type of celery is grown shaded from direct sunlight, so the production of its chlorophyll content, and hence its green color, are inhibited.

Choose celery that looks crisp and snaps easily when pulled apart. It should be relatively tight and compact and not have stalks that splay out. The leaves should be pale to bright green in color and free from yellow or brown patches. Sometimes celery can have a condition called "blackheart," which is caused by insects. To check for damage, separate the stalks and look for brown or black discoloration. In addition, evaluate the celery to ensure that it does not have a seedstem-the presence of a round stem in the place of the smaller tender stalks that should reside in the center of the celery. Celery with seedstems are often more bitter in flavor.

To store celery, place it in a sealed container or wrap it in a plastic bag or damp cloth and store it in the refrigerator. If you are storing cut or peeled celery, ensure that it is dry and free from water residue, as this can drain some of its nutrients. Freezing will make celery wilt and should be avoided unless you will be using it in a future cooked recipe.