We check in on our year-long project #BLTrees, following the seasons through the trees around us with Marielle Anzelone, urban botanist and ecologist and the founder of NYC Wildflower Week. This month, Georgia Silvera Seamans, founder of Washington Square Park Eco Projects and Local Nature Lab, and a member of the #BlackBotanistsWeek organizing committee, talks about tree "phenology" -- how the coming of spring will show up in our trees.

→National Phenology Network

My Pin Oak is ready for spring! Being deciduous, its leaves dropped in the fall, when it also created buds for this year's leaves & flowers. Shorter nights cue the buds to elongate in preparation for the bloom or leaf to come. What do the buds on your tree look like? #BLTrees pic.twitter.com/w9UwDCsxXl

My tree hanging tough through the snow storm #BLtrees pic.twitter.com/H4DEhkyW3e

My Dawn Redwood street tree #BLTrees March update. Still looking wintery? pic.twitter.com/ZQdCgAmN6g

#BLtrees - Month 5(Still barren, no buds anywhere...yet; last night was (perhaps) the last sub-freezing temp the tree will see this season -- expect to see a big change by next month.)cc @BrianLehrer @NYCbotanist pic.twitter.com/XPO9mqyJuO

Happy March from Holmdel Ginkgo. Signs of the promise of the beautiful Ginkgo leaves to come. @BrianLehrer #BLTrees pic.twitter.com/JXEjd5jKwj

#BLTrees Chinese Sequoia beginning to show life Feb 17...gorgeous perfectly triangular shape pic.twitter.com/PV0DEyFLEV

.@BrianLehrer here is my American Elm at the edge of Saint Nicholas Park. February 2022.#bltrees #bltree pic.twitter.com/UclPLlLxju

@BrianLehrer #BLtrees our Japanese maple enjoying the warmth of the sun in Hewitt N.J. pic.twitter.com/GfIxHm4qYR

#BLtrees! On the left is my original tree, the dogwood (?) that’s going to blow your mind soon. On the right is a tree at the Lincoln Road, budding and fuzzy! pic.twitter.com/12y5veuFpe

My March update on my maple for #BLTrees. Not too different from February, but if you look close the buds are getting ready. Luca is loving to examine the tree too. pic.twitter.com/aN7dqvz1PO

My locust tree in March. @BrianLehrer #BLTrees #snow #trees #hudsonvalley #winter #miltonny pic.twitter.com/VGPbrbn6WW

RED MAPLE ALERT!#BLTrees pic.twitter.com/dWDqAtLaUm

#BLtrees 1. Japanese maple in the front yard. 2. The big sugar maple out back. pic.twitter.com/a5SKNYA2bM