Idea of Grass Icon
It is a patch of grass. There are four blades of grass, with three blades in the foreground and one blade in the background. Two blades curve to the left, and two blades curve to the right. The third blade of grass is in the background and curving to the right.
This page shows the different variations of the Grass from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free.