Status of SPRING

Comparison of 2019 spring leaf out to average from 1981-2010

Keep track of SPRING by visiting USA – National Phonology Network

The First Leaf Index is based on the leaf out of lilacs and honeysuckles, which are among the first plants to show their leaves in the spring.

The First Bloom Index is based on the flowering of lilacs and honeysuckles. This Index is associated with blooming of early-spring shrubs and leaf out of deciduous trees. 

https://www.usanpn.org/news/spring 

       

 

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