He has never been one to 'let the grass grow under his feet'. [=he has never been slow about doing things; he gets things done quickly]
The young candidate hoped to gather votes at the 'grassroots' level in his own neighborhood.
I'm not ready to be 'put out to grass' [='put out to pasture'] just yet.
(..) civilian newsmen ignore. Sir, maybe you should go out on some ops yourself. I'm sure you could find a lot more blood trails and drag marks. Joker, I've had my ass in the grass. Can't say I liked it much. Lots of bugs and too dangerous. As it happens, my present duties keep me where I belong... (..)1987 Full Metal Jacket
(..) Right shoulder. Port. Do we love our beloved Corps, ladies?. Semper fi, do or die. Gung ho. Gung ho. Gung ho. What makes the grass grow?. Blood, blood, blood. What do we do for a living, ladies?. Kill, kill, kill. I can't hear you. Kill, kill, kill. (..)1987 Full Metal Jacket