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.
(..) and respect all the creatures from the crawling ant to the leaping antelope. But, Dad, don't we eat the animal? Yes, Simba, but let me explain. When we die,our bodies become the grass. And the antelope eat the grass. And so, we are all connected in the great Circle of Life. Good morning, sire! (..)1994 The Lion King