Jaques d'Alltrades wrote or quoted:

The trouble is that some plants drink more than others. For instance,
the potted passionfruit probably drink four or five times the amount
that the citrus trees do, and the bog myrtle and sphagnum moss have to
have rainwater.

Tomatoes, runner beans and such need even more, and then there's pot
size to take into consideration, and the bonsai have to be watered
several times a day in hot weather...

With an automatic watering system some things will drown while others parch.

Unless...

Exactly. I'd list that as one of the /advantages/ of an automatic
watering system - you can control where the drippers/sprinklers/nozzles are.
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