This year, Tu BiShevat falls on February 9, 2009.  This holiday is also known as "New Year of the Trees" or Jewish Arbor Day. The holiday is observed on the fifteenth (tu) day of the Jewish Month of Shevat. Scholars believe that Tu BiShevat was originally an agricultural festival, marking the emergence of spring. After the destruction of the Temple in 70 A.C.E. this holiday was a way for Jews to symbolically bind themselves to their former homeland by eating foods that could be found in Israel. In the sixteenth and seventeenth century Kabbalists created a ritual dining experience for Tu BiShevat similar to the Passover Seder. Today, Tu BiShevat has also become a tree planting festival in Israel, in which both Israelis and Jews around the world plant trees in honor or in memory of a loved one or friend.  See http://urj.org/holidays/tubishvat/index.cfm?   Also see http://www.myjewishlearning.com/holidays/TuBishvat.htm.   Also, you can find a MULTIMEDIA TU B'SHVAT website at http://www.aish.com/tubshvat/tubshvatdefault/default.asp.