peony with red spots on foliage
Got a peony for my AP, but since AP's getting on in years, have had to tend to the peony. I have it growing outside where it gets about 6 hours of sun on the east side of the backyard on a raised bed.
The peony was planted with a lantana that essentially started taking over the bed--the peony just sat there. The lantana has been moved, and now that I look at the peony, it's got red spots on leaves that are edged with red. Is it some sort of "rust"? Can I ignore it or do I have to do something about it? Why won't the peony grow? (The peony has been in the yard for about 2 months.)
Thanks in advance for any suggestions for ideas.