In a word, no. :-) When we bought our house, some of the beds were infested with nutsedge. I spent many summers pulling it out, and have diminished it by 95%, but some occasionally pop up in the middle of thick, tall plantings (Japanese anemone, echinacea, etc.)

Agree completely :-) Nut sedge will not be crowded out by anything. It will just grow through the root system of larger plants. And is hard enough to control on a stand-alone basis!!

Info here: http://ipm.ucanr.edu/PMG/PESTNOTES/pn7432.html

If you want to win, you must be persistent!