O Christmas Tree by Vashanti Rahaman, illustrated by Frané Lessac (Boyds Mills, 1996).
This is a lovely story about a boy in the West Indies who wants nothing more for Christmas than a real evergreen tree. He's sad because the trees that come off the boat have dried up and the needles fallen off. But his neighbor teaches him that the true Christmas trees in the West Indies are the poinsettia that bloom each season.
You can read about Caribbean Christmas traditions here. My boyfriend is from Grenada and I love the sorrel drink they make there. You can find a recipe here.