July 4th is a mile marker for my chrysanthemums. It is the last time in the season that I pinch my mums back to make them bushy and delay fall blooming.
This year, I started pinching my mums back regularly every month or so. When temperatures in June became too hot to spend much time outside, I didn't pinch them so that several mum plants were actually blooming USA Independence Day weekend, several months ahead of the desired bloom time around Halloween.
I usually prefer to plant low maintenance flowers but I don't mind having to pinch mums every few weeks. They are well worth the effort to add flowers when fall comes around.