Tu Bishvat Resources
Grow Torah offers a free Tu Bishvat trivia contest, complete with questions, Jewish sources, and fun facts about trees and fruit.
Aside from its own holiday seder, JNF features a page of holiday games and lessons, as well as sermons about Tu Bishvat.
Canfei Nesharim provides a page with links to and summary of numerous articles trees, Torah and ecology.
Lookstein presents a couple of lessons and games for young children.
MyJewishLearning is rich in pages for Tu Bishvat, including the history of the holiday, different ways it is celebrated, its connection to Zionism, and various gourmet recipes.
Olami’s list includes sourcesheets, cards, audio shiurim and videos.
Worthwhile recent books on trees include The Hidden Life of Trees, American Canopy: Trees, Forests and the Making of America, and the novel The Overstory.
Jewish National Fund Tu Bishvat plant trees program designed for schools plus more JNF resources.