Solar-powered remote watering system
You can build an automatic self-watering system if your seedling is located in a remote area where water is unavailable. You will need:
- a solar panel (5 watts is sufficient),
- a 12 VDC rechargeable battery,
- a 12 VDC timer, and
- a small 12 VDC water pump, as is often used in garden fountains.
The battery and timer are in a waterproof plastic case, and the water pump is submerged in a 5-gallon can with a lid to minimize evaporation. The pump will run for several minutes 2-3 times/week in the summer.
