Nut grass "nut" is 30 feet below and can stay dormant for years. Try using a liquid weed killer to keep it under control. I have yet to kill a lantana even with straight weed killer on it. They are very hardy.
No-- Creepypastas can include whatever you want. They are, however, generally horror-themed. There are guidelines on the creepy and crappy pasta pages telling you what is generally expected.
I was so desperate to get rid of the nutgrass in my ground cover that I made a tool (taped 6 cotton buds together) and applied poison to each individual...