Anyone growing Canna 'Ra' aka Longwood Yellow? Having a hard time finding this one. I found a few pond stores online selling 'Ra' but in my experience they usually have there stock mixed up or just plain wrong.
As suggested, C. 'Ra' is a Longwood introduction by R. Armstrong. It was primarily grown in their aquatic conservatory, as I recall. Commercial field production has been difficult and therefore limited the availability of this cultivar.