Cleft Phlox is not only remarkable in its neat habit and dense flower coverage, but for its deeply cleft petals, giving the abundant blooms a delicate, feathery look. ‘Top Notch’ has all this, and a truly remarkable bright Periwinkle color. ‘Top Notch’ forms a low, restrained mound of highly fragrant flowers which do not spread aggressively. Early spring bloomer. Attracts butterflies!