Ideas what this could be?

in Plants
Growing large, bushy and with a fairly thick stem. I’m assuming it was intentionally planted as it’s right in the middle of my planter, but it does not look like anything else( ie dahlia 
or low bedding plants)….


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https://www.crocus.co.uk/plants/_/romneya-coulteri/classid.3535/
I seem to think it has an unpleasent smell? I did grow it many years ago so my thoughts are a bit vague.