How to water your plants

Biased. Only works for temperate/cooler climates. If you live somewhere actually warm, watering once or twice a day is the norm. Smaller pots should be watered more often than larger ones. Do not water if the top 2cm of soil is moist. Do water during late morning/early afternoon on very hot days to cool plants down. Do not water in late evening/night, the damp will cause your plants to rot. Garden gnome out.

The trees are strong, my lord. Their roots go deep.

Most of my plants I only water after the leaves start wilting and they've never been happier. This doesn't work with every plant as they'll just die but in my experience it works with most of them. For the rest I just let the soil get bone dry and then I water quite heavily. I don't think I've ever killed a single plant by underwatering it but I've overwatered several to death.

This supports my practice of waiting until the plant is wilted and dropping leaves, right?

Infrequent is wrong according to my experience. Also start with a small pot and move up when the roots start growing out of the bottom hole. Too large pots for small plants don’t work well.