When does Tu biShvat take place?

Tu biShvat takes place on the 15th of Shvat.

5786 / 2026 — evening of February 1 through sundown on February 2
5787 / 2027 — evening of January 22 through sundown on January 23
5788 / 2028 — evening of February 11 through sundown on February 12

Guide to holding a Tu biShvat seder

• We drink four cups of wine or grape juice throughout the seder to symbolize the cycle of the seasons: Starting with 1) a full cup of white wine/juice (winter), we gradually add more red wine/juice to our cups, 2) a tiny drop that turns our cups the palest pink (the first blossoming of spring), 3) a little more to a bright, clear red (summer), and 4) ending with all red, our cups a deep burgundy color (autumn).
• How to spell Tu biShvat
   
• Traditional Hebrew songs for Tu biShvat
  • HaShkediyah Porachat (The Almond Tree is Blooming) 

     PHOTO ESSAY: SPRING IN A NUTSHELL: "The blooming of the almond tree is a sure sign it's Tu Bishvat"

• Planting seeds for the future:
  The Talmud relates a story of Honi the Circle-Maker:

  One day Honi was walking along the road and saw a man planting a carob tree. Honi said, “How many years until this tree will bear fruit?” The man replied, “Not until 70 years have passed.” Honi said, “Is it obvious to you that you will live seventy more years [to enjoy the tree’s fruits]?” The man replied, “I found a world full of carob trees. Just as my ancestors planted for me, I, too, am planting for my descendants.” (Taanit 23a)
  
  Tu biShvat teaches us the importance of stewardship over the earth — not only for our own benefit, but for the sake of generations to come. We may not enjoy all the fruits of our labor, but we benefit from the efforts of our ancestors, and so we have equal obligation to the generations who come after us.
  
  This aspect of Tu biShvat has been particularly resonant in Zionism, which, from its earliest days as a socio-political movement, emphasized nurturing the historic Land of Israel by planting trees, developing modern agriculture, and preserving its natural beauty.
   
• Preservation of Israel's wildflowers