Tu BiShvat is the Jewish holiday whose name means “New Year of the Trees.”
Its name combines the Hebrew letter values for 9 and 15, giving the fifteenth day of the month of Shevat. In the Hebrew calendar, that date became a boundary for calculating the age of fruit trees for agricultural tithes in ancient Jewish law.
The holiday is not a major biblical festival and has no universally required feast. In many communities, people eat fruits associated with the Land of Israel, especially the seven species mentioned in Deuteronomy: wheat, barley, grapes, figs, pomegranates, olives, and dates.
Kabbalists in Safed developed a Tu BiShvat seder in the seventeenth century, modeled partly on the Passover seder. In modern Israel and elsewhere, the day is also associated with tree planting and environmental awareness, though customs vary by community.