Before adding the lily grass, be sure to remove all leaves and thorns (unless you want the leaves as part of the effect.)
Leave a smooth stem free of anything that could tear clothing or hands.
Lily grass is broad blades of grass in a glossy green color. Bear grass (also commonly used by florists) is much thinner than lily grass.
Lily grass is wide enough to tape it separately onto the rose stem one at a time.
Place two blades of grass behind the rose head, extending them above the head of the rose. Cup the two blades of grass around the stem, bending them in place, before securing with floral tape.
Tape tightly into place, pulling and stretching the tape so it adheres to itself as it is wound around the flower stem.
Pull the stem wrap tightly, to keep the lily grass in place.