Lemon juice contains citric acid which is usually neither harmful nor helpful for plants, so it cannot kill plants.
In some cases, if you feed lots of lemon juice and not water, it can cause harm to small plants.
Big trees don't show any reaction as they make their food themselves.
In some cases, if you feed lots of lemon juice and not water, it can cause harm to small plants.
Big trees don't show any reaction as they make their food themselves.
They don't kill plants because it is developed to protect plants.
If you put in lots of sugar, probably.