>>42695828I don't know why you'd need 30 trees, the only berries you need en masse are the EV reducing ones and you get around ten per tree (without the special mulch) so you should never need that many trees.
Also weeding takes even less time than watering, speaking of watering, it's way more leniant in gen 6 than it was in the previous games where the soil would dry after a couple of hours and not watering it immediately would quickly reduce the berry yield.
Also also, I don't know what to tell you if you think a Pokemon game is tedious because of Pokemon encounters.