So far, evidence suggests that echinacea may prevent the common cold. It also might help as a treatment. Some studies, many of them small, have found that taking echinacea may reduce the length of a cold and the severity of its symptoms. However, two large clinical trials found no benefits at all.Should coneflowers be cut back in the fall?
Let the coneflowers stand for the entire winter. Doing so adds interest to your garden when nothing else is standing during winter. Birds will seek out and feed at these coneflowers. Or, if you want to tidy up the garden, cut the coneflowers back in the fall.Should coneflowers be cut back when the bloom dies?
Also known as the hedge coneflower and purple echinacea, this hardy perennial grows in U.S. Department of Agriculture plant hardiness zones 3 through 9. While the flowers readily set seed, attracting birds and other wildlife, you should cut back the dead blossoms to encourage repeat blooming and prevent self-sowing.