1. The National Phenology Network www.npn.uwm.edu Coordinator: Dr. Mark Schwartz University of Wisconsin Milwaukee mds@uwm.edu

2. 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

3. NPN: Lilac Observations Syringa chinensis 'Red Rothomagensis'

4. Lilac Phenological Observations: 1. First leaf 2. 95% leaf 3. First bloom 4. Full bloom 5. End bloom

5. www.npn.uwm.edu

13. First Leaf widest part of leaf past tips of brown bud scales Full Leaf 95% of buds open

14. 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

15. End of Bloom 95% of flowers have withered or dried and floral display has ended.