Walters Gardens, Inc. of Michigan, of Michigan registered this tissue culture sport of H. 'Heartsong' in 1997. It is a medium size plant with pale lavender flowers in July.

According to The Hostapedia by Mark Zilis (2009), "...the few clumps that still exist in gardens have matured into nothing more than 'Heartsong'. In short, 'Cupid's Dart' represents a temporary, juvenile phase, probably induced by tissue culture growth regulators."