The omni plant can die if it is not watered, but it takes a very long time for this to happen. Some special items, such as death flowers or the ambrosia recipe book (worth 12,000 Simoleons), cannot be replicated using the omni plant.
The plant can only be planted by Sims that have a gardening skill level of 10. The omni plant is a special plant in The Sims 3 that can be used to replicate many other plants, as well as other objects-including some books and fish.