I noticed during the growing season that quite a few of my overabundant echinacea had these weird tumor-like protrusions on the seed-head. Any ideas what might have caused this?
Another echinacea question I have is this...some plants had green stems, and the normal color blossoms, and some plants have dark red stems and blossoms that were slightly darker in colour. Do older plants have darker stems, or do I possibly have 2 spp. going on here? Thanks for your help. April