Should crepe Myrtle be deadheaded for more flowers?

My Crepe Myrtle trees are huge and over 100 years old. They would be impractical to dead head; however, the short growing, flower bed varieties can be pruned in the autumn after they have bloomed. This will keep them short, compact and will increase flowering the following season.

No, Crepe Myrtle actually blooms twice a year. Usually late spring and again in August. (In Florida) The best way I have found is to cut them back in Fall and you will have a tree full of flowers every year. Good luck!

Here is an article that might be helpful - https://www.todayshomeowner.com/how-to-deadhead-crape-myrtles-for-second-blooming/ -good luck

Yes, when you see a full head of flowers gone and and the seed pods, clip them off ( I usually go down the stem closer to the branch) and a new stem will grow with flowers. I only do it once per season.

As soon as a bloom is finished, cut it off, and you will get second and even third blooms. I am getting my second blooms now.