
Watering is the number one maintenance task that you need to do with plants, especially plants being grown in pots. You can either water plants from the top or bottom and each has unique benefits. Often it can depend on the species, growth stage, and growing conditions as to which technique is best.
The general school of thought is that watering from the bottom is the most effective way to water plants in pots. It thoroughly soaks all of the soil, encourages strong root development, and can also help avoid many fungal diseases that come with watering from above.