Trying to eliminate Rudbeckia submentosa that has taken over my prairie garden. I am bundling it with string, removing the flowers and spot treating with Roundup. Please tell me that all this work will pay off.
Where are you? I love my R subtomentosa up here in the North. Only the R triloba reseeds copiously for me, but is easy to spot and control. Why are you having problems?
I would just pull them out without using round up. It may take some time to remove it all but after a bit you will get results. I have that problem with my blue mist. One little plant has taken over the yard. I just thin it out early and hope for the best. Now I have to move it again. It is in three spots on the property. It gets out of hand but what amazing cut flowers the makes.
I pulled my older black eyed Susans out this year and replaced them with a miniature flower version. The other variety just looked bad by mid summer, often dying off and from some kind of disease. I have moved the plant and cleaned the roots but nothing helps.
dandy_line (Z3b N Cent Mn)
tuben
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