What is the proper way to deadhead starfire phlox and red flame phlox?

Question

Both of these varieties have blooms on single stems. Do I just snip off the spent bloom right at the top of the stem, leaving the stem? New buds are not presently visible!

Answer 1

Cut off spent flower clusters as soon as the flowers begin to wither with a pair of small shears.
Cut off the entire flower spike once all the buds have bloomed and there are no new buds forming along the stem.