There is a big elm tree in the northwest corner behind the house. Does it have any influence on the host?

Geomantic speaking, it doesn't matter if you don't plant mulberry before, willow after, and clap your hands (poplars) without planting ghosts in the yard. Moreover, it is good to have big trees behind the house, as long as the branches do not press the edge of the house. For example, if the branches are pressed to the edge of the house for a long time, it will affect the health and wealth of the owner! It is recommended to trim it every year!