This week we celebrated Rosh Chodesh Shvat.
The Rosh Yeshiva held a special lesson from his book "Tzmicha Beeretz Hatzvi".
On the question of why the New Year for trees is in the month of Shvat,
and not in the month of Tishrei in which most of the "Rosh Hashanahs" fall:
Rosh Hashana for Ilanot marks the beginning of growth,
and it depends on the soil, the rainfall and the underground water of the Land of Israel.
From the month of Shvat, the trees no longer nurture from the waters of the past year,
which are gone, and exist from the rainwater of the new year.
Hence, Rosh Hashanah for trees does not necessarily mark the beginning of a new growth
(there is also growth from the previous year during this period),
it is intended to create a distinction and differentiation between two different agricultural years.
This distinction stems from the difference between the rains of the previous year and the rains of the new year,
and accordingly it distinguishes between the fruits of the previous year and the fruits of the new year.
In the world, as a whole, there is a tendency to examine processes in their visible parts,
and to ignore their hidden roots from the eye, from which everything derives.
The Torah examines the processes of growth from the beginning, from their roots,
even if they are hidden from our view.
Apparently it was necessary to determine the beginning of a new year for trees
according to external changes, of the beginning of growth in the tree and its fruits,
above the ground, but the Torah stated that the renewal of the year
is actually related to hidden underground changes,
changes in the water below the ground. Hidden from the eye.