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Aster Yellows - Do I need to remove all of my coneflowers?

5 years ago
last modified: 5 years ago

Some of my coneflowers appear to have contracted Aster Yellows. Can I remove just the plants where I can see the green petals, or do I have to pull out the entire bed of coneflowers?? (That would be devastating!)

These two seem to be worst (Yes, they also got nibbled by some beetles this week...)

But I really don't want to pull out all this, and there are about as many just on the other side of the pathway:

Advice please?

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