It's month two of our year-long project, #BLTrees. Marielle Anzelone, botanist and founder of NYC Wildflower Week (.org), and Regina Alvarez, assistant professor of biology at Dominican College and former director of Urban Horticulture and Woodland Management at the Central Park Conservancy, talk about what's happening with the trees as the weather gets colder and offer tips for identifying trees in their leaf-less state, based on their trunks and branches.

My tree still has some of its yellow leaves on December 14th. #BLTrees pic.twitter.com/stckpyVItR

@BrianLehrer @BrianLehrer Dec. pics of my 2 trees - cherry and dogwood from Central NJ #BLtrees pic.twitter.com/vvYKZwkNTG

@BrianLehrer #bltrees pic.twitter.com/TZb7PcmlnQ

@brianlehrer #BLtrees London plane tree Brooklyn pic.twitter.com/XY1BkWM04P

#bltrees Oak tree planted for my dad. Never fully loses its leaves. (taken December 2021) pic.twitter.com/XKzDZ6pUpt

My trees not looking as happy this month. #BLTrees pic.twitter.com/rp63b4bx3W

#bltrees pic.twitter.com/G6JIzOvoA6

#bltrees my red bark tree ready for winter pic.twitter.com/7BKITBP6cc