How To Save A Tree Dying From Dog Urine. This is not only good for your dog keeping them hydrated, but helps to dilute the level of urea in their urine. I would personally wash it out with water, and then add extra potassium (without adding any other nutrients, except maybe a little calcium and phosphorus, if you want—don't add any more nitrogen).
You should make sure your dog has enough water throughout the day. There are products on the market for dogs (and cats i presume) that will buffer the acid in the urine. Rinse with water to dilute the dog urine, put water 3 times to the dog urine.
This excess salt draws water out from the tree roots, exacerbating a problem which dog rocks can do so much to solve.
In small amounts, dog urine can even be beneficial. Keeping your dog well hydrated is another way to reduce the negative impact that dog urine has on susceptible plants and grasses. I realize if he or she is an outdoor dog it is hard to do this training. So maybe you’ve got a lot of neighbors who have dogs that love your trees.