Western wheatgrass at one time covered almost the entire state of North Dakota, where it was designated the official state grass in 1977. In most photos I found, it is yellow to yellowish-green (not quite the vivid green I went with). All you'll need to pipe this hardy prairie grass is medium consistency royal icing, oval tip #55, round tip #5, a glue stick, parchment paper squares, a flower nail, and a Styrofoam block to rest the nail in. Start by sticking a parchment square to the nail with a dab from the glue stick.drop string; holding the tip above the surface and allowing the icing to smoothly pour out as I moved the tip along in a gentle arc. At the end, I stopped pressure, touched the tip to the surface, and pulled the tip away.