I'm currently on the Gardening V quest that requires the player to get a super harvest from every kind of tree except Paper. What's strange though, is that for several RL hours of tree harvesting, including three Ix spice runs, I haven't been able to get even a single tree super harvest. I'm doing everything I can to maximize the odds: I pet and water the trees to full health and I'm trying to keep my mood as high as possible. Nothing works. It's starting to worry me, especially since I'm getting animal and crop super harvests pretty often. I think it may be a bug.