This a aster flower. It is found in blue,pink,purple,red and white.  Ekya school had taken us to Lalbagh . Asters are daisy-like perennials with starry-shaped flower heads. They bring delightful color to the garden in late summer and autumn when many of your other summer blooms may be fading. There are many species and varieties of asters, so the plant’s height can range from 8 inches to 8 feet, depending on the type. You can find an aster for almost any garden at garden centers in autumn ! The plant can be used in many places, such as in borders, rock gardens, or wildflower gardens. Asters also attract bees and butterflies , providing the pollinators with an important late-season supply of nectar.