I often go by trees, but unless it's fr a quest, or I'm feeling bored, I tend not to pet/harvest trees. More mature trees don't yield more per harvest (which is a feature I'd like), or yield anything better per harvest. If they were my own trees, I'd do the bare minimum amount of petting/watering necessary to keep them alive, since maturity doesn't seem to make a difference. Could this be incorporated more as a gameplay aspect?