Is it superstition that mulberry trees can't be planted at home?

It is superstition, mainly the homonym of mulberry and mourning, not to say that mulberry has any harm.

Moreover, on the land in the south of the Yangtze River, there are often mulberry trees in front of and behind the house. Maybe the north is more taboo! Mulberry is a good fruit now, and many people will plant it in front of and behind the house.