Hello, I'm a new user as well. While plants are somewhat of an enigma to me, I know dogs! I owned a kennel and trained dogs for years. Marking territory is an extremely natural thing for a dog, so its a very tough habit to break. There is always the option of building a barrier, or confining the dog, but those options can really adversly effect your landscape, and can be costly. There is always the dreaded shock collar. I know it sounds inhumane, but shock collars work mostly with the element of surprise, rather than by inflicting pain upon your dog. You should always monitor your dog when using this, and timing is important! Your other option, and this is one i've found to work wonders for people who can't stand the thought of zapping their dog on a regular basis is the citronella collar. It comes with a remote much like the shock collar, but when the dog is in the process of doing the unwanted behavior, i.e. peeing on your bushes, you press the button and a citronella mist sprays from the collar. Being that dog's noses are so sensitive, and they hate the scent of citronella, your dog will have a negative association with your bushes right away. The great thing is its all natural, and wont cause any side effects at all...besides maybe some green bushes!! I hope this helps!
The foul slime stands for the decay of humanity; the fragrant flower that springs from it, for the purity and courage which are immortal-Henry David Thoreau