I think you can learn a mussar vort from the blackening of the aravos.
We see that someone without taste or smell (chochmah or yiras shomayim) as soon as he is cut off from the tree of life and not kept in water (Torah) he withers away.
Also the elongated aravos represent the mouth when it is closed the way it should be.
Also I was wondering how someone could have Torah and not maasim tovim or the reverse(???? ??????) if the Mishnah in Avos says “?? ??? ???? ??? ???? ??? ??? ???? ??? ????’