beautifulpirate
Chirping
- Mar 10, 2016
- 282
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Basically we'll dig a trench under our raised bed area. In it we will lay out a thick plastic sheeting as a lining in order to make a reservoir. The reservoir will be filled with river Rock and /or course sand and corrugated irrigation tubing. A tube will feed into the reservoir from a bucket that has a toilet float valve in it. The toilet float valve will be fed by a rainwater collection system. The reservoir will be covered by water permeable fabric and then soil. The soil won't fall through the fabric but will wick water upwards, essentially creating self watering for the plants, promoting deeper root systems and eliminating water waste via evaporation. There will be an overflow pipe that leads into the next raised bed with the same setup. In theory, if all of the beds are level and the tops of the reservoirs are level with the float valve, they'll keep filled automatically. The last bed will have an overflow pipe that just leads out from the ground. This will prevent flooding the soil and plants during rainy seasons.
That's just the basic concept behind it. It's a process and going to cost a bit of time and money up front. But in the long run, it will be fantastic and a huge time saver.
For more information, Google wicking garden bed. Adding the float valve and rainwater collection feed is just taking it one step further.