The Gardener credo currently has a few issues, but there's two of them that I see as the most annoying.
1st. The amount of harvest requested (often 15-25) force you to spam so many pots. This used to be fine before mound beds were a thing, since you would still want lots of pots to make quantity of spices and such. But now mound beds are used for that, so why force me to make 100s of pots anyway?
I would suggest allowing mound beds to count for harvest quests. There's two possible ways: one would be to count the amount of plants you get (which would allow to increase the numbers requested, since each mound bed will give you 10+ plants), the other would be to simply count them as pots do (so to use in tandem with it).
2nd. Seasonality shouldn't be part of this credo (or any for that matter). I've seen several "pick -bush berry-" quests, which are either super easy or impossible, depending on the season. At least the "eat -bush berry- / -tree fruit-" quests are doable if you stockpiled them.