Aster yellow on coneflowers - Ask Extension
I pulled out all my coneflowers last year because of them. Is it safe to plant new coneflowers in the same location? Should I remove the dirt in the...
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Aster yellow on coneflowers #868058
Asked May 12, 2024, 10:05 AM EDT
I pulled out all my coneflowers last year because of them. Is it safe to plant new coneflowers in the same location? Should I remove the dirt in the area?
St. Louis County Minnesota
Expert Response
Thank you for writing.
The biology here is complex. The germ lives in plants, including weeds that are susceptible to aster yellows.
The germ does not live in soil.
The germ can survive the winter in the infected roots of perennial plants, including weeds,
The germ spreads by a particular insect.
Therefore, the key is weeding all infected plants and infected perennial weeds. This is a big list. https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/insects-pests-and-problems/diseases/viruses/aster-yellows#:~:text=Aster%20yellows%20is%20a%20disease,and%20grains%20are%20also%20hosts.
Because weeds can root in compost piles, I suggest bagging and disposing of lawn waste rather than composting it.
https://extension.umn.edu/yard-and-garden-news/aster-yellows
https://extension.umn.edu/plant-diseases/aster-yellows
The biology here is complex. The germ lives in plants, including weeds that are susceptible to aster yellows.
The germ does not live in soil.
The germ can survive the winter in the infected roots of perennial plants, including weeds,
The germ spreads by a particular insect.
Therefore, the key is weeding all infected plants and infected perennial weeds. This is a big list. https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/insects-pests-and-problems/diseases/viruses/aster-yellows#:~:text=Aster%20yellows%20is%20a%20disease,and%20grains%20are%20also%20hosts.
Because weeds can root in compost piles, I suggest bagging and disposing of lawn waste rather than composting it.
https://extension.umn.edu/yard-and-garden-news/aster-yellows
https://extension.umn.edu/plant-diseases/aster-yellows
