We check in on our year-long project #BLTrees, following the seasons through the trees around us with Marielle Anzelone, ecologist and botanist and founder of NYC Wildflower Week.  This month, psychologist Ming Kuo, an associate professor of Natural Resources and Environmental Sciences and the director of The Landscape and Human Health Laboratory at the University of Illinois, Urbana-Champaign, shares her research into the positive effects of seeing and experiencing trees and greenery on individual and community health and well-being.

→ Find out more about Marielle Anzelone's tree walks, inspired by #BLTrees at NYC Wildflower Week.

It's time to share your January #BLTrees 🌳🌳 Here's my pin oak - a deciduous tree that has lost most of its leaves...but not all. Oaks tend to hold onto leaves only on younger branches that have not yet had flowers. This phenomenon has a lovely name - marcescence 🍂 https://t.co/rVAeQAziZX pic.twitter.com/YL3fMgtJBS

Many Oaks and Beech trees hold onto their dead leaves through the winter. pic.twitter.com/53Whm5hypJ

Here are my January photos of the Japanese maple in my front yard and the sugar maple out back (as well as a bonus photo of syrup I just made from the big tree!). @nycbotanist @BrianLehrer #bltrees pic.twitter.com/Gg1TRcnfby