Structure
Structure is something that traditional flower-bed design often paid far less attention to, because colour was considered more important. Meadows are a perfect reminder that without structural plants, there would be no meadow at all.
A large mass of herbaceous plants would quickly turn into an indistinct tangle if it were not held together by plants that rise above the rest — sorrels, burdocks, wild carrot and others. Even when dry, they retain their backbone and continue to create rhythm across the meadow.