Crug Farm say: Named by Dan Hinkley back in 2001 in his legendary Heronswood catalogue, after my wife Sue. As well as themountainofChirisan, where I discovered the plant growing on a very steep moss-covered impoverished boulder strewn clearing in 1997, accompanied by Dan et al. The plant was immediately recognizable as bearing mid-blue double sterile florets surrounding the fertile centre in that acidic ground (pink in alkaline). We find the plant to be slow growing remaining a well branched shrub to less than a meter tall. Best grown in a moisture retentive drained soil.
Gardens found in the 10 surveyed in 2010:NAN
UKPlant Finder 2012 = 1 nursery