Tu B'Shevat

I heard there’s a Jewish holiday this time of year called "Tu B'Shvat,” also known as “The New Year for the Trees." Would you please explain the message of this holiday for us today? Thanks.

I heard there’s a Jewish holiday called "Tu B'Shevat”, also known as “The New Year for the Trees." When is it this year, and would you please explain the message of this holiday for us today? Thank you.