Here's what to do: Train your dog to recognize garden boundaries. Put him on a leash and walk him along garden beds; if he starts to step into a bed, tug on the leash slightly and say a firm "No." Repeat until the dog knows the rules; if he forgets, repeat training as needed.
 
• Avoid dog-toxic plants, including azaleas, rhododendrons, and daffodils, or plant them in off-limits areas.

• Plant hardy plants such as daylilies and Liriope, which can stand up to a dog's activity.

• Keep dogs away from newly planted areas, which are easily disturbed. Wait until plants mature slightly, or protect new plants with tomato cages.

• If your dog wears a path through the yard, don't fight it. Just turn it into a garden path, using stones or bricks. Beware of using mulch that can cut into a dog's foot pads.

• Direct a dog's digging by building him his own sandbox. Dig up an area 2 to 3 feet deep, frame it in, and fill it with clean white sand. Bury bones and toys for extra incentive. Cover bare spots with grass, ivy, Vinca, or other ground cover to discourage digging. Protect a recently seeded lawn with chicken wire until the grass is established.

• Digging can be a sign of boredom. Give your dog more exercise, using favorite throw toys or Frisbees.