USA NPN National Phenology Network

Taking the Pulse of Our Planet

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Great Sunflower Project

The Great Sunflower Project was started in 2007 at San Francisco State University. Great Sunflower Project observers are documenting the life cycle events of sunflowers. These observations will be archived in the national phenology database maintained by the USA-NPN.


United States
40° 58' 47.6328" N, 91° 24' 22.5" W
Partner Type: 
Citizen Science Program