This Coffee Tree (probably Coffea arabica) was a 4" pot size plant in October 2006. It is now growing in a recycled food container made into a sub-irrigated (aka "self-watering) planter (SIP). It has a wick made from a clear party cup glued to the bottom (not visible). Note the very healthy and robust root system.
The next step is to replant it into a tote box SIP much like this one. It will grow no different than a tomato plant in a SIP (like an EarthBox) except that it will be indoors by a window and the tote box is clear plastic.
We'll find out if there is enough light in an east facing window to produce flowers and coffee beans. For sure, it will get very accurate irrigation. Adequate light is the only question. I may add auxiliary lighting because I really want to see it produce white flowers and eventually red berries.
Also, I just bought some Kona coffee beans online and will propagate them in recycled soda bottle SIPs. Stay tuned.