Conoclinium coelestinum 'Album' (aka Eupatorium coelestinum 'Alba') - This, the white flowering form of Hardy Ageratum graces the October garden with clouds of white. It flowers for a long time above clean green rounded leaves Fertile draining soil. Will be striking if paired with Callicarpa dichotoma or perhaps a colony grading Viburnum setigerum. How about a coupling with Phytolacca americana 'Silberstein'? Half to full sun. In the north Blue Mist Flower will tolerate light frosts when in flower if planted in a south facing site. Native from New York to Florida, west to Texas, north to Nebraska east to New York minus Iowa but add Michigan. Fertile draining soil. Half to full sun. In the north Hardy Ageratum will tolerate light frosts when in flower if planted in a south facing site. Established potted perennial, cutting grown.