Planting flowers and feng shui

In fact, there is no problem of good feng shui, but there is a problem: there is no mulberry before, no willow after, and there is no "ghost beckoning" in the middle. In other words, it is forbidden to plant mulberry trees in front of the hospital, willow trees in the back of the house and poplar trees in the hospital (the alias of poplar trees is "ghost beckoning"). This is what I got from several Feng Shui gentlemen.