Chives are a member of the onion family. Chives grow in clumps from a bulb under the ground. You can use the leaves cut up on salads or on potato or pasta dishes. You can use the flowers in salads too. Chives are very easy to grow from seed, and they can also grow new chives by digging up a clump and splitting off the smaller side bulbs.
There are different varieties of chives, one of the most useful being garlic chives, which have leaves and flowers with a strong garlic flavour.