Hello

1) Create a Barrier: Creating a barrier between your dog and the flower bed usually works very well. This can be done a number of ways. It isn't difficult to create something that is functional, affordable and very appealing. One way to do this is to use different fencing options to border the flower bed. You can also build raised beds for your outdoor plants, using stone, bricks or pea gravel for ground enhancement. Container gardens can be another solution to the problem, and they make maintenance a snap.
2) A Place of His Own: Give your dog his very own play area, where he is allowed to dig and roll round whenever he wants. Use landscape timbers to create a large sandbox and teach your dog to go there when the urge to dig hits. Don't use lumber treated with CCA or preservatives, as these substances have been associated with disease. You can also use iron, retaining blocks, stone or a number of other materials to construct your dog's special area. Fill it with wood or bark chips, leaves or another type of mulch. Dogs love to dig in sand, so you can use a mix of sand and soil, but be careful not to use too much sand as this will take away the "cool dirt" feeling your dog loves.
3) Home Remedies: Many times, using herbs or spices will deter your pet. Sprinkle red pepper and cumin throughout the flower garden, or use a spray mixture of cayenne pepper and rubbing alcohol. This causes him to sneeze and will be a good discouragement from getting into the flowers.

Thanks for reading