Silage-making has been used to reduce the concentrations of toxins in a variety of crops. But in the case of poison hemlock, the opposite is true — making silage out of it actually increases one of its toxic alkaloids.
Water-wise gardening conserves water and helps protect the environment. A xeriscape is a “dry scene” that uses very little water, but a water-wise garden includes any style that is designed to conserve water.