Purple Cone Flowers turning black and wiltingHome › Forums › Flower-Garden Questions › Annuals and Perennials › Purple Cone Flowers turning black and wiltingThis topic contains 0 replies, has 1 voice, and was last updated by Anonymous 11 years ago.Viewing 1 post (of 1 total)Author PostsSeptember 13, 2008 at 5:48 pm #28426 AnonymousMy purple coneflowers bloomed fine this year but now are turning black from ground to seed head, all through the plant. Any idea what this is and how to deal with it? They haven’t done this in the past. I’m zone 4. Thank you.Author PostsViewing 1 post (of 1 total)You must be logged in to reply to this topic.