Salvia uliginosa 'Ballon Azul' has intense pale sky blue flowers with white markings set against mid-green foliage. This variety has coined the common name ‘Dwarf Bog Sage’ and is about half as tall and wide as most other clones of this magical species,but not really a dwarf and can still get to a metre or so tall, but is none the less easier for most to accommodate. German nurseryman Ewald Hügin developed this cultivar - its name a strange combination of the French for Balloon and the Spanish (and some other languages) for blue. ( Azul, Azur, Azure etc. all being derived from the mineral Lapis Lazuli or Blue Stone)
To my mind the colour of this cultivar is a shade paler than that of the taller clone Salvia uliginosa ‘Reach for the Skies’. Highly adaptable, Salvia uliginosa 'Ballon Azul' is ideal for the beginning Salvia gardener. They are very easy and very pest resistant, and a joy at a time of year when mostly everything else is over.