sprinkle the top of the dirt with cayenne powder. It works on cats and squirrels. Dogs is stupid....but, they are no fools. Warm blooded animals, I have discovered, get jealous if you spend less time with them because you are spending more time with someone/something else. Unlike your wife, they cannot nag at you- so they act out. sometimes, this is a direct attack on whatever you are spending more time with. Dirt with seeds in may not be delicious, but they might be....the enemy. some love and attention before, during, after your garden time might reassure your pooch. Include a new toy on days you are going to be spending extra time with plants. might help?