Posted: 01/07/2016 at 13:55
I think it can be a bit of a spreader in some parts of the USA where it is a native, but it certainly doesn't fit the description of 'invasive' in the UK in my experience.
When looking online for information about a plant, I find it helpful to include 'UK' in the search terms,
e.g. < rudbeckia uk > .
This way you'll get information applicable to UK condtitions rather than worldwide.