The name of the game I was looking for, where you grow flowers in a greenhouse and sell them, is the CE version of Haunted Legends 4: The Curse of Vox.
Haunted Legends: Curse of Vox has you solving a murder mystery, not saving your house, so I was confusing two different games. Maybe I played the game where you save your house at around the same time as I played Curse of Vox.
There are some ghosts in Curse of Vox, though they are not necessarily spooky, and it's not what I think of as a paranormal game.