Syn. Lighthouse & Beacon Light & Firelight

The name means Beacon of Light.  The dense flowers heads are a deep red and only turning blue on very acid soils

Gardens found in 28 pre 2000 surveys DA  WS WAA TR MS

Gardens found in the 10 surveyed in 2010: DA HIL DIN ESV ABG NAN AW

UK  Plant Finder 2012 = 5 nurseries