Purple Cone Flowers turning black and wilting Home › Forums › Flower-Garden Questions › Annuals and Perennials › Purple Cone Flowers turning black and wilting This topic contains 0 replies, has 1 voice, and was last updated by Anonymous 8 years ago. Viewing 1 post (of 1 total) Author Posts September 13, 2008 at 5:48 pm #28437 Anonymous Yes, in the same zone…a very wet summer here in the Hudson Valley. Do you advise the disposal of the root system? BTW, my Shasta daisies were also a big disappointment this season, with similiar appearance/disappearance. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.