Here are sources for a shiur on the cusoms of Tu Bishvat and their sources:
- Why do some people not say tahanun on Tu Bishvat?
- Why do some people eat fruits on Tu Bishvat?
- Why do some people have a Tu Bishvat seder?
- Why do some people plant trees on Tu Bishvat?
Tu Bishvat Sources
David Sedley's Thoughts and Musings (and some audio shiurim too)
