Self-watering gardening
http://www.fshs.org/Proceedings/Password%20Protected/1995%20Vol.%20108/420-421%20%28GERALDSON%29.pdf
http://www.actahort.org/books/513/513_16.htm
A self-watering wickpot reservoir system
Reservoir Wick Pot
- Salt concentration from hard waters
- Nematodes and pests