The drought has dropped my pond water level so low that the 6'x12' mat of ell grass in front of my deck has virtually disappeared. But my shovel transplants I put out in deeper water are looking good. I have 7 GC and I have never noticed them eating the spiral ell grass so I figure they eat other plants before they would feed on the spiral. I had worried they might eat it so I might never get the spiral ell grass established but that worry doesn't seem justified now.