Observational Data

You are invited to use the Phenology Observation Portal to download customized datasets of observational data from the National Phenology Database, which includes phenology data collected via the Nature's Notebook phenology program (2009-present for the United States), and additional integrated datasets, such as historical lilac and honeysuckle data (1955-present).  Filters are available to specify dates, regions, species and phenophases of interest.

Click to Access Phenology Observation Portal

Learn more about the USA-NPN's Observational Data