'stretch of grass' is a perfectly correct and usable phrase in written English.
You can use it when referring to a continuous area of grass, such as a field or a lawn. For example: "I took a leisurely stroll down the long stretch of grass to the pond."
French doors lead out to a stretch of grass and the river beyond.
For nearly 10 years, this stretch of grass has been a reliquary for these mementos.
There is an elevated stretch of grass -- the High Line's first lawn!
There's a long stretch of grass here beside the Virgin River – a strip of oasis.
Yesterday afternoon, two burned patches were visible on the stretch of grass where the couple fell.
That video shows Scott, who was unarmed, making another break for it, across a stretch of grass.
The little brick building where the police gathered was in the same place, and so were the groves and stretches of grass where bongo drums throbbed and the hippies, Yippies, radicals and anti-war demonstrators argued among themselves until the police clubs and tear gas united them.
The park, part of which is officially the state-run Empire-Fulton Ferry State Park, offers stretches of grass, a playground with fountain, rocky beach (no swimming) and arresting views of the two bridges and the Manhattan skyline that attracts a phalanx of photographers at sunset.
We hovered alongside gold and ruby mountains and skirted over empty stretches of grass dotted with tin-roofed barns.
What had once been a mountaintop now felt more like prairie, with long, flat stretches of grass and brush lying between hills.
Tim points toward a watery stretch of march grass oddly littered with bricks and concrete.
