Symbolism of "Twelve"

My amazing organ pipe cactus had twelve flowers over the Rosh Hashana holiday -- two on Rosh Hashanah eve, four the first night, and a record-setting six the second night. I greeted them all and treasure their appearance during such a significant time. The significance of twelve flowers is interesting -- number of months, number of tribes, ....I haven't quite figured it out yet but certainly the next twelve months may unveil the answers. And I will appreciate the lesson of my precious flowers, gracing us with their presence for one glorious night. The year is off to a great start, with two flowers on the very first night.