Personally, I'd cut them down, apply concentrated glyphosate to the cut ends, then any suckers that come up hit with glyphosate.

Stompede, that sounds great!
Should I do it this fall or wait until early spring?
I'll Google glyphosate for I have never heard of it.

Thanks so much.
Sunny

Glyphosate is the generic chemical name for products like Round-Up, etc. It's a contact killer, though usually won't remain in the soil.

Actually, if the plants you are wanting to kill are suckers (not saplings), then applying herbicide to the cut ends will damage the plants you want to keep (because they are the same plant), perhaps even killing them.

Hi -- Have my glysophopate all ready to do some of them in soon. If some others get it, it will still be worth it! I mean, I have a FOREST of crepes. The other end of the driveway bed is filled with crepe myrtlettes my father started from seed years and years ago. They are almost over my head, but not the same thing as on the other end of the bed. I wouldn't try "tree-ing" them, but will try to thin some of them out.

Thanks so much for all the help!
Sunny

Around here people pay for crApe myrtles.

Brandon7 - Be my guest -- bring your shovel. FREE crepes! Wish I really could give them to you!
Best -
Sunny