Robuta

https://www.rhs.org.uk/plants/340294/symphyotrichum-novi-belgii-lady-in-blue/details Symphyotrichum novi-belgii 'Lady in Blue' | Michaelmas daisy 'Lady in Blue' Herbaceous Perennial/RHS symphyotrichum novi belgii lady in blue michaelmas daisy herbaceous perennial https://www.rhs.org.uk/plants/340489/symphyotrichum-novi-belgii-schneekissen/details Symphyotrichum novi-belgii 'Schneekissen' | Michaelmas daisy 'Schneekissen' Herbaceous Perennial/RHS symphyotrichum novi belgii michaelmas daisy herbaceous perennial rhs