Yes, the plants indeed can make some kind of harmony. Even if someone thinks it is just nonsense...but they are living creatures too, that reflect some form of energy, or are we mistaken?
Also, when you take care of them, you show some care, we could even say affection. That way it also helps us to nurture some values in us :)
Of course @mipiano, we were not wrong. They are living beings and they are energy, good energy that we should take care of 🙂