Where did the celebration of Tree Day...the Feast of Our Lady of the Harvest come from?

Arab Weather - Many Arab countries have made it a tradition to celebrate Tree Day on January 15th of each year.
But where did the fifteenth of January come from to celebrate Tree Day?

It originated from an Aramaic-Syriac rite, the celebration of the Feast of Our Lady of the Harvest. The Syriac Church around the world celebrates the Feast of Our Lady of the Harvest on January 15th of each year.

Religious and spiritual meanings of Arbor Day

This feast has multiple religious and spiritual meanings, including asking God for blessings on agricultural crops and beseeching God to lift pests and calamities from the crops. In addition, people seek the intercession of the Virgin Mary to bless their seasons and crops before the harvest season and the gathering of the harvest. The feast of Our Lady of the Harvest is linked to the mystery of the Eucharist or Holy Communion.

The winter forty-day period: what does it mean in the collective heritage of the Arab Levant?