Drip irrigation is the second most effective method of watering plants. It avoids overwatering, which causes plats roots to rot and provides a constant supply of moisture to the plants.
When you have a large farm, drip irrigation is made possible by building a large system of pipes that run throughout and drip water directly onto the roots of the plants. This is used mostly for trees since those do not need to be replanted and therefore the piping system is not affected.
This is great and all, but how can you utilize the concept of drip irrigation at home with house plants without having to run pipes all throughout the house, or in my case - apartment? I use, wait for it: ice cubes! That's right! I make a few trays of ice and simply place 1 to 2 ice cubes into the pot, depending on the size of the plant.
The ice will slowly melt and drip down to the roots without immediately overwhelming the plants with a lot of water and allowing time for all the drops to be taken up by the roots. It is also much faster and you do not need to walk around with a large amount of water to feed your plants. This also minimizes your chances of messy spills. Win win for everyone!