I recall this happening with mine when they reverted. When my sim woke up the plants were not ready to be harvested. So I had my sim prepare her breakfast, waiting for the time that the plants were harvestable. The harvest did come up, but my sim was in the middle of eating her breakfast. I was going to have her harvest right afterward. As soon as she finished and washed her dish, I directed her to harvest her plants, only to discover they had reverted back to the just planted stage. I never went into CAS, buy mode, or even travel to cause a loading screen. I haven't even attempted to do gardening in this game ever since.
