Thanks for the help! But sadly this didn't work :/, It's really strange because if I save outside the city then turn off the game then relaunch it, it will be gone. but If I'm in the city then leave it the floating grass will be their until I save and restart the game, I've also noticed that the floating grass appears everywhere besides Markarth, I'm starting to think that entering a Cell then leaving it to Skyrims cell it messes up the grass for some reason, It's quite strange.