What's wrong with having a big willow tree at home? Is feng shui bad for the next generation?

There are big willows in front of the door, and I'm afraid there are willows behind the house. As the saying goes, "Don't plant mulberry before, don't plant willow after", and "ghosts clap their hands" in the yard. The fact that there are no willows here has something to do with the funeral of the dead. Because both the "mourning staff" and the "evocation flag" are made of willows, willows should be planted behind the grave as "cash cow" and "tomb tree". Therefore, willow trees are also easily considered as funerals. On the other hand, it is said that willows do not bear fruit. If you plant it behind the house or in the yard, you will be afraid of obstacles and feel that this family will have no children and descendants.