This widely diverse group of plants includes common North American wildflowers plus a whole selection of unique hybrids. All of the flowering spurges insist on fast-draining soils and are dependably drought tolerant. Once happy, this is a carefree plant that adds color almost year round. The big yellow flowers appear in late spring through mid summer. Then with fall temperatures, all the foliage goes bright butter yellow for even more color. Always handle Spurge plants with care, as they contain a milky sap that can irritate your eyes, nose and mouth. Some species have a poisonous sap.