How to design environmentally friendly, water-efficient gardens using natural rainfall.
Rain gardens catch and channel the environment’s natural precipitation, delivering it where it will most benefit our plants. At the same time they protect the environment by keeping polluted runoff out of municipal storm sewers. They allow water to percolate into the soil where its needed, avoiding erosion. A well-designed rain garden is sustainable, requiring little or no additional water to maintain life.
Unlike active rainwater harvesting, where runoff from roofs, pavement, and other impermeable surfaces is collected and stored in barrels and cisterns, passive rainwater collection takes moisture when it falls and puts it to best use. But its water may also be collected from those impermeable surfaces, like driveways, and channeled directly to growing things. (more…)