While we have been having a relatively warm winter in the United States, it cannot compare to what winter is like in Israel. It is the rainy season there, the time of year that Israel greens up, with cooler temperatures and rain (which feels like a miracle every time I experience it) in between
"15th of Shevat;" New Year of the Trees; Jewish Arbor Day, which is a minor festival.
In a few weeks we will be celebrating Tu BiSh’vat. There are numerous approaches you could take in planning your celebration.