It's really interesting what will come up if just left alone. We can't control the water at our place but the water level will drop over the summer due to evaporation and expose mud flats. What comes up each year will be a mystery. Some years the predominant plant might be red root sedge, barnyard grass or nodding smart weed. This year it's nodding smart weed, having a 10 yard wide swath 3/4 the distance around a 10 acre pond. Winter rains will bring the water level up and flood the food but unless we get some heavy rains early on, it's usually late Dec or early Jan before that happens.