It has attractive clumps of good-looking foliage. It needs regular watering, will burn in the hot sun. A member of the sunflower family, this tough and easy plant will yield profuse numbers of bright yellow flowers summer and fall. This plant likes full sun and will survive on very little water once it is established. Cut back the waves of dead flowers with hedge shears to bring on successive bloom.
Coreopsis grows one to two feet tall and spreads to three feet.
Replace every three or four years or when they begin to burn out. Native to the area, these are the blue flowers you see along the roadside in October and November. There are more than 600 species of true asters, ranging in size from six inches to six feet. Most garden varieties require fertile soil, full sun, regular watering and a little work since they will need to be divided and replanted yearly in late fall or early spring. The ones most often seen in local nurseries are varieties of the hybrid Aster frikartii, a two foot high open spreading plant with flowers lavender to violet blue with yellow centers.