Certified GKH Gardening Expert
This can differ slightly. Just stick as close to those numbers as possible. There are many organic fertilizers out there that can fit this description. We don't usually recommend brands, but a google search will bring specific organic boxwood fertilizers. These will be least harmful to a pet. In general, a pet will not want to eat fertilizer after taking one lick of the bitter salts. Small amounts will cause stomach discomfort, but many fertilizers have places in the things we eat and drink.
Gatorade, for example, contains phosphoric acid, which is one of the main ingredients in bloom boosters. So , generally, fertilizers will not pose extreme harm in small quantitites... Now heavy ammonium nitrate ferts will pose some health risk in large quantities.
Make sure to follow all instructions on the package, and there will be little chance of harm.