Robuta

https://www.rhs.org.uk/plants/169364/phlox-douglasii-white-admiral/details Phlox douglasii 'White Admiral' | phlox 'White Admiral' Alpine Rockery/RHS phlox douglasii white admiral alpine rockery rhs https://www.rhs.org.uk/plants/86374/phlox-douglasii-star-dust/details Phlox douglasii 'Star Dust' | /RHS phlox douglasii star dust rhs