Has anyone got any tips for dealing with a digging dog?  I have designed a planting scheme and been asked to plant borders for a client who has simultaneously aquired a new puppy. It seems that the puppy has taken a shine to the (currently empty) borders and is now helping to dig them up. Other than the obvious training the dog (which I'm sure the owners will do but imagine it takes a while) or building a fence to keep it out, has anyone got any tips?

I spent Friday high in the Peak District in glorious sunshine learning how to build a drystone wall. The day was filled with the language of 'throughs', 'fillers', 'builders', 'copes' and 'cheek ends'. I'll never look at a drystone wall in the same way again. What we ended up with was a beautiful (even though I say it myself) 6m stretch of wall that will hopefully last for decades. Not only was this a useful learning experience for me but the wall which we were repairing was on a farm belonging to a charity supporting ex-offendors and people with spinal injuries.

As a designer its great to learn from an expert in this type of construction and to have a go yourself. I'm therefore planning on constructing my own drystone wall as part of a re-design of my own garden. The good thing about it is that I know if I don't get it right first time I can always pull it down and start again. I can see many hours of walling ahead!