I have a very good customer that has a corridor area of plants. Lots of different root zones. In hindsight a french drain should have been run through here to provide better drainage. If we water deep and infrequently to benefit the shrubs we lose the mondo. I've taken moisture readings and the top 3-4 inches gets dry long before the deeper soils. I suggested to her we abandon deep, infrequent, watering and just do a daily light watering for the mondo and let natural rainfall do the deep watering. Any thoughts? It looks good now because the mondo was just planted. We are concerned about drowning the larger plants.