Herb to Stop Dog from Digging?

Hi and thank you for your time and for sharing your knowledge.
Is there a herb that can be planted with flowers that would discourage a dog from digging? Discourage by taste or by smell? Our dog is a lab who loves to dig. I would like to plant flowers and herbs in his territory, which is the yard, but he is most stubborn about digging everything up.

The "Piss-Off Plant" repels dogs. Not all dogs are affected, but many are, so it's worth a try. It is very easy to grow, thriving in most garden situations. You need to plant it out every spring because it is not winter hardy. For more information, please see:
www.richters.com/Web_store/web_store.cgi?product=X4490