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The National Phenology Network
www.npn.uwm.edu
Coordinator:
Dr. Mark Schwartz
University of Wisconsin Milwaukee
Facilitate collection and dissemination of plant phenological data across the US
Support research on interactions between plants and lower atmosphere, and long-term impacts of climate change.
National Phenology Network Mission
NPN: Lilac Observations
Syringa chinensis 'Red Rothomagensis'
Lilac Phenological Observations:
1. First leaf
2. 95% leaf
3. First bloom
4. Full bloom
5. End bloom
www.npn.uwm.edu
First Leaf
widest part of leaf past tips of brown
bud scales
Full Leaf
95% of buds open
First Bloom
at least 50% of flower clusters on the plant have
at least one open bud
at least 50% of flower clusters have all buds
open
Full Bloom
End of Bloom
95% of flowers have withered or dried and floral display has ended.