[Good guy]

This perennial normally grows about 2m tall. It has fleshy rhizome-type roots and is quite invasive. It flowers now. This specimen is only about 1m high because I've given it some serious competition. It thrives in an open, sunny position and doesn't seem fussy as to soil type, just reasonably well drained. It's another one I got years go from a long-abandoned garden.

[Silver surfer]

Interesting.

Looks like Sinacalia tangutica..used to be called Ligularia tangutica.
Common name Chinese ragwort.
Has a rhizome root..see link 3.

http://www.bethchatto.co.uk/s-z/sinacalia/sinacalia-tangutica.htm

https://www.google.co.uk/search?q=Sinacalia+tangutica..&rls=com.microsoft:en-US&source=lnms&tbm=isch&sa=X&ei=jLDxU4q_No6g7Abxy4HQAw&ved=0CAgQ_AUoAQ&biw=1536&bih=745

https://www.google.co.uk/search?q=Ligularia+tangutica&rls=com.microsoft:en-US&source=lnms&tbm=isch&sa=X&ei=FbHxU_OrFuXQ7AbfyoHYDA&ved=0CAgQ_AUoAQ&biw=1536&bih=745#facrc=_&imgdii=_&imgrc=5p_r7vL-l-ppZM%253A%3BCB03eyYXtjeuRM%3Bhttp%253A%252F%252Fwww.wildstaudenzauber.de%252Fimages%252FLigularia_tangutica_China-Goldkolben_Knollenrhizom.JPG%3Bhttp%253A%252F%252Fwww.wildstaudenzauber.de%252FStauden%252Fligularia_tangutica.htm%3B700%3B465

[Good guy]

Got it in one, I think, Silversurfer. Well done. That rhizome looks just like what I dug up when I relocated the plant. It's a lovely plant if you've loads of space to fill; the foliage is very attractive for months.. And the flowers can add another note to the late-season 'blaze' of colour.

[Silver surfer]

Having really clear pics such as you posted really helped.

[Greengage]

Have a lok at topic just planted a new hedge there is a plant there we need help with, fingers crossed im right with ID but not sure.

[verge]