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10/22/2021 - 12/01/2021
Tree Reporters Challenge
Let's get to know trees in a different way! Choose one of the two challenges Tree TV or Tree Poster and become tree reporters!  >>

09/01/2021 - 12/15/2021
2021 Autumn European Phenology Campaign
Wondering how the trees turn color in autumn and prepare for a winter sleep? Do you want to continue observing your tree or are you just starting? Then don´t miss the Autumn Tree Observation (Phenology) Campaign.  >>