How to Use a Disposable Vape Pen With Button? How to Harvest Catalpa Tree Seeds From Beans Came across this tree in Hudson, WI that looked like it had giant green beans growing off of it, looked it up and it's called a Northern Catalpa often known as a " My friend was a good guy and loved by everyone, he was also a prankster and a pain in the ass. Because of this, I planted a catalpa in his honor. Every