Looking for a 2-minute (approx) poem about winter.?

My family (currently all adults) is having a poetry slam to celebrate the Winter Solstice. This is a very literate group (authors, artists, musicians, a photographer, and a philosophy student), so I don't need rhymes -- looking for something mature and emotionally moving about winter, the moon, caring for the earth, etc. Any suggestions? No need to write out the poem; if you provide a title and author, I will find it.