I download a lot of custom harvestables for my game and every once in awhile I will run into one that will 'self-harvest' whenever you load a lot on which that harvestable is in bloom. The plants will be bare and whatever was growing on them will have been moved into the household inventory. Does anyone know if there's a quick fix that I could do in Studio that would stop this from happening? Thanks!

I think this is more a reset condition than anything that happens as a result of a setting configurable in an object definition, because there is no such actual behavior in the harvestable and gardening code. All your fruit winding up in the household inventory is what happens when a plant gets mongled during a household reset process. I've seen it happen with vanilla harvestables, too.