Re: grass in the flower beds
Sounds like Bermuda grass. I've had good luck removing as much of the runners and root balls as possible, then applying pre-emergent before applying the layer of mulch. You'll have to keep after the tendrils as they pop up to keep them under control, once they infest everything it is a battle to get rid of them. You may have to spot spray with an herbicide to help get it under control.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!