Keep Cats Out Of Plants. Give your cat her own plants. However, when it comes to garden and landscape areas of the house, some people will rather have cats kept out of such areas.
Sprinkling in hot pepper (nope), cayenne pepper (nope), even adding clam shells into the soil (nope. They may use the planter as a litter box or they. It will keep cat away from plants and digging the soil out of boredom, and will also be a great distraction from the unwanted behavior as cats react better to praise rather than punishment.
This is the classic cat “training” technique.
To keep cats out of yards, you can try sprinkling offensive substances around the area such as cayenne pepper flakes or ammonia. Marj baker offers an alternative, i have lots of plants and the cats generally leave the house plants alone, but there is always one kitten who can't keep his paws or jaws of any green growing thing. These repellents can be sprayed around the perimeter as well. Some may even consider plants a litter box.