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, 2 months ago. Viewing 1 post (of 1 total) Author Posts September 13, 2008 at 5:48 pm #28431 Anonymous I had coneflower problems all season. At first I thought it was the critters, but then, it all turned black. Fungus? Stange blight? should i dig it up and send it to the burn barrel? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.