The following question was sent to the P&PDL diagnosticians here at Purdue University:
Question: I live in Indianapolis. Last year I noticed one of my coneflower plants had yellow striations on it's leaves which looked like rose mosaic. The plant was not chlorotic. Other than the discolored leaves it seemed healthy and flowered. This year, I've noticed in addition to the original plant with mosaic like appearance there are now three more on the other side of the path displaying same symptoms. I have had a rose with mosaic planted in the general area, could this be a source of the problem?
Answer: Before control recommendations are given, it is very important to identify the specific virus. Therefore, we are not able to answer your specific question without seeing a sample. You are welcome to submit a sample to our lab and we will diagnose the problem.