Installing a pumice wick under vegetable beds will save water and even harvest rainwater!Once a pumice wick has been established under a vegetable or flower bed, it works season after season to keep the soil moist and aerated. It will provide very significant savings in maintenance. Soil compaction is greatly reduced in beds with pumice wicks, making cultivation easier, and you will save a minimum of 50% less water consumption.
Where the vegetable bed is adjacent to the output of a drain spout, the pumice wick will act as a rain water harvester. As rain water runs down the eaves and downspout, it fills the pumice wick beneath the bed. The vegetable bed photographed here needed watering only twice in the season these beans were planted. This vegetable bed is located in Calgary, Alberta, Canada, a semi-arid environment.