Trees often germinate from below or in the middle in landscaping maintenance and tree transplantation. This phenomenon often can't attract everyone's attention at the beginning, but in the later period, the top of the tree will slowly dry up and eventually dry up and die, which is basically hopeless.
The reason for this phenomenon is actually very simple, that is, there is no timely and reasonable germination and pruning. This phenomenon is often called nutrient interception in gardens.