Tu BiShvat, called the "New Year of the Trees," falls at a seemingly incongruous time of year.
Tu BiShvat is a minor festival whose provenance dates only to the time of the Second Temple. However, the kabbalists who clustered around the great fifteenth-century mystic Isaac Luria of Safed placed great weight on the holiday, creating new festivities, gatherings at which hymns were sung, fruit (particularly carob) was eaten, and four cups of wine were taken (as in the Passover seder).
Thanks for asking! The correct term is “Reform Jews.” Reform Judaism teaches that change is ongoing; the reforming of Jewish tradition and practice is not something that concluded in the past, but rather is something that continues with each individual. Therefore, “Reform” in the present tense is the appropriate term.