Tu B'Shvat is arguably the most vegetarian of Jewish holidays, because of its many connections to vegetarian themes and concepts: 1. The Tu B'Shvat Seder in which fruits and nuts are eaten, along with the singing of songs and the recitation of biblical verses related to trees and fruits, is the only sacred meal where only vegetarian, actually fruitarian, foods, are eaten. Hence this meal does not even require the killing of plants, as would be the case if, for example, carrots and bread were eaten. This is consistent with the diet in the Garden of Eden, as indicated by God's first, completely vegetarian, dietary law: And God said: "Behold, I have given you every herbyielding seed which is upon the face of all the earth, and everytree that hasseed-yielding fruit--to you it shall be for food."
(Gen.1:29)