New England Leaf Out Project

New England Leaf Out Project (NELOP), based at Boston University, and Project BudBurst are partnering together to help investigate the effects of climate change on New England trees. NELOP researchers plan to combine Project BudBurst on-the-ground observations with remote sensing to determine whether trees are leafing out earlier in New England than they did in the past due to warming temperatures.

To get started, find trees in your area from the plants listed on the right. In the spring, use a Project BudBurst Regular Report to monitor your selected trees and look for the first signs of leaf out.

About LCNR

Plants to Monitor

Want to help? It’s easy. Choose from the plants below and track when they flower, leaf out or set seed. 

American beech
Fagus grandifolia
Bigtoothed aspen
Populus grandidentata
Black birch
Betula lenta
Black oak
Quercus velutina
Northern red oak
Quercus rubra
Paper birch
Betula papyrifera
Red maple
Acer rubrum
Sassafras albidum
Shagbark hickory
Carya ovata
Sugar maple
Acer saccharum
White oak
Quercus alba