Purple coneflowers have Yellow Aster disease
I thought my purple coneflower heads looked really funny so I did some research on the net. They have the Yellow Aster disease which means I have to rip them all out. I noticed my neighbour has it too. The disease is transmitted by leafhoppers and can reside in other weeds as well.
I have had these plants in my front garden for over 10 years. I always keep seeds from the previous years. I have many new plants already started for other gardens that are not affected.
Since this disease can harbour with the leafhopper eggs in the soil, I have decided to replace these plants with bee balm plants instead. They grow similar in habit and still have striking flowers.
Anyone else have funny looking coneflowers this year? This is occuring in Ottawa.