Grassed

The valley before and below him was heavily grassed, and throughout its entire length wandered a small stream.

You would've got away with it if Tom hadn't grassed you up.

None of the other pupils liked Tom because he always grassed everyone up to the teacher.

None of the other pupils liked Tom because he always grassed on everyone to the teacher.

a grassed open space

They came out together on the grassed slope of the headland, with Cora walking her usual pace behind Bradly, following his broad back with unconscious docility.

The field was roofed by tall, thin pine trees. The ground underneath was clear and grassed.