Hi Takadi,

I have never really done this. Check the tomato forum, they they write about containers with reservoirs at the bottom of the container that are filled through a tube. The soil extends below the water in the bottom reservoir in a filter type basket and the plants pull water up into the soil. I think it is called "EarthTainers" or something like that. It can even be automated but not easily, I imagine. The containers can be bought already built or be constructed by you from a Rubbermaid container. Sounded like it works pretty good. So it can be done. GL and aloha.

Hi Takadi: I've never been a water from below guy and have no reservations about it except one. If you have a plant that you will have for years (+-), the potting mix can accumulate "salts" to a point where they become injurious to your plant. This depends on how often the plants are watered how often and how much you fertilize as well as how "salty" your water is. By salts I mean a) fertilizers and b) the natural minerals in your water. The water we have is extremely hard and would never work for a long lived plant if watered exclusively from the bottom because the salts follow the water flow (from the bottom to the top when watering only from the bottom). As the water is used up by the plant and evaporated predominately out the top, salts are left behind. I have to water from the top and add water to the point that additional water is leached out through the bottom of the pot at each watering or salts will soon accumulate.