A fly stitch is also called Y stitch as it resembles the alphabet Y. the stitch consists of up of a V-shaped loop fastened by a vertical straight stitch. The stitch is often used as scattered stitch like grass or in borders as a plant shape. When worked one upon other and in branches, it takes a plant shape.

To work Fly stitch, bring the thread through the fabric out at the top left of the line that is to be worked. Hold the thread down with the left thumb and insert the needle a small space, level and to the right of where the thread first came out. Make a small stitch downwards to the center. With the thread under the needle, pull it through the fabric and secure it in position with the loop.

The length of the fastening stitch can be varied to produce different effects. The stitch best represents twigs and grass.