For the sake of color comparison here are blossoms from different butterfly bushes in my garden. Listed form left to right: Adonis Blue (a dwarf), Black Knight, Pink Delight, and Royal Red. They make a beautiful bouquet whether freshly cut or after the blooms have faded. This is a mix of week-old, faded flowers and fresh ones from this morning. As long as the foliage still looks green they make a nice presentation in and out of bloom.