A very simple tileable grass. This is a large file, and can be shrunk to fit your needs.  It is an odd shape though, so you may want to stretch it to fit your needs.  It you simply cut off the edge, it will no longer perfectly tile.

This is tileable, aka seamless, aka repeatable both horizontally and vertically.

Checkout my other free artwork!

If you would like to learn how to make a seamless background on your own, here is a video tutorial on how to do so: https://vid.me/1gNn