The National Phenology Network

www.npn.uwm.edu

Coordinator:

Dr. Mark Schwartz

University of Wisconsin Milwaukee

mds@uwm.edu

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.