Plant a peach tree in the garden behind the house, facing my kitchen. Is there any influence from the perspective of feng shui?

If you don't face the kitchen door directly, it's generally fine, and there's nothing to pay attention to. If it is facing the kitchen door or other doors, you should get rid of it quickly, otherwise it will be bad for your family and cause respiratory diseases. Remember, if you don't plant willows at home, you won't plant willows, walnuts and peppers. Old people at home should not plant walnut trees, and young people should not plant peppers.