Robby, actually the spots on the sedum are brown, very small. I don't see webs of any kind but I'm going to spray anyway. The spots are all over the plant in varying degrees, so I would hate to star breaking away the stalks.
There does not seem to be an airflow problem with my coneflower where it is located. Even the new leaves show signs of getting the spots which are light green or yellow. some leaves seem to have been chewed on...rabbits maybe.
Could it be the crazy weather we have had...I got very hot 90 degrees in April. Everything is 2-3 week early. We have had little to no rain up to last week when it finally rained for most of a day. It has been very very hot most of May. Could it be the plants are stressed.
Thanks for the advice. Kathleen