The celosia is non-toxic to humans and pets, making it an ideal plant for indoor herb gardens. The flowers, leaves, and stems of the plant are all edible. Celosias are prized in Africa and East Asia as an excellent source of vitamin A, vitamin C, and iron. The leaves can be eaten raw, parboiled, or sautéed. For a delicious side dish, add onion, lime juice, or a dash of chili oil. Celosia leaves soften quickly, so be careful not to overcook them. The flowers are commonly used in soups and stews or can be added as a garnish to salads.