USA NPN National Phenology Network

Taking the Pulse of Our Planet

You are here


About this Project, Network or Partner
Budburst community scientists work together with research scientists, educators, and horticulturists  to answer specific, timely, and critical ecological research questions by making careful observations of the timing of plant life cycle events, also called phenophases. These life events differ depending upon the type of plant, but usually include leafing, flowering, and fruiting phases of plants as well as leaf color and senescence. Spring, summer, fall, and winter phases are all valuable. These observations are used to better understand how plant species and ecosystems respond to changes in climate locally, regionally, and nationally. Our projects and campaigns reflect the many ecological questions and issues raised by the ways humans impact the environment and how plants respond to those changes.
Geographic coverage: 
United States
Taxonomic groups: 
Flowering Plants
Non-flowering Plants
Contact E-mail:


United States