In the catalog: Search under Tu bi-Shevat
On the shelf: most books will be in the BM 695 T9 section

In the catalog: search under Tu bi-Shevat--Liturgy or Tu bi-Shevat--Prayerbooks and devotions
On the shelf: most books will be in the BM 675 T8.2 section.

There are many examples available online as well, here are just a few:
JOFA Seder (at Ritualwell)
Tu B'Shevat at Hillel
Coalition on the Environment & Jewish life

Tu BiSh'vat at the Union for Reform Judaism
http://urj.org/holidays/tubishvat.shtml
Includes a short overview of the holiday with links home celebration pages as well as congregation and community programs.

Tu Bishvat at www.MyJewishLearning.com
http://www.myjewishlearning.com/holidays/TuBishvat.htm
This site discusses the holiday from Rabbinic, Kabbalistic, Zionistist, and Ecological points of view.

Tu B'Shevat at Kolel, The Adult Centre for Liberal Jewish Learning
http://www.kolel.org/pages/holidays/TuBishevat_intro.html
Along with an overview of the holiday, this site includes a seder and a chart of themes.

While the Library thinks that these sites are useful, their content is not under our control and may express views that are not shared by the Hebrew Union College-Jewish Institute of Religion.

Search the catalog under Tu bi-Shevat--Study and teaching or check with the Tartak center (or email Tartak @huc.edu) for classroom materials

Environmentalism
Environmental protection
Trees (Jewish law) or Trees--Religious aspects--Judaism
Nature (and scroll down to Nature--Religious aspects)