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.
(..) Should I? No. Here I go. (Laughs) *Triumphant music* (Rapunzel sings When will my life begin) *Just smell the grass, the dirt. Just like I dreamed they'd be.* *For like the first time ever, I'm completely free.* *I could go running, and racing, and dancing... (..)2010 Tangled