Harvesting on Community Lots

What meant that it was always the case that plants will only grow harvest at a certain time of the day and the only tiny change that was made later on was the actual time that happens (also see below in the spoiler). It was somewhat later in the morning initially if I remember correctly, but that way, plants would never grow harvest for players working in one of the active careers (or playing with go to school mod). It would also not be growing harvest if your Sim happend to be away from their home lot at that time for whatever reason. So it obviously seemed more convenient to change it to 5 a.m.; I personally cannot think of a better time during the day and I remember that I was often unable to get harvest from my plants before they changed the time shedule.
And yes, if I visit my public gardens to harvest, I wake up my Sims early in the morning for that purpose. At least for me, that is far more convenient than constantly having to stay on my home lot during the day so that the plants on my home lot will grow harvest properly. But that might be only me (or might not, as there must have been some reason for the change back then).

That beeing said, if would be totally possible to add some test so that the harvest time on community lots will be set to a different time than the harvest time on your home lot. They would simply have to change the tests in the object tuning of all plants for that and I wonder why they haven't done it yet.