My Tree in Autumn 

In autumn, the trees shine with many shades of yellow and red as they prepare for winter sleep. Their leaves gradually turn colour and fall down in a process called green-down. 

Let´s experience the beauty of autumn change together!


Schools registered for the campaign receive 3 learning activities for students and regular newsletters with invitations to webinars. They also have the opportunity to earn a GLOBE certificate and be part of the lively campaign community! 

Join the 2022 autumn campaign - register now!

For further information about the campaign, please read below or write to lenka.kleger@terezanet.cz. 


Select one of the 7 species (Hazel, Fig, Lime, Oak, Sour cherry, Birch, Beech) that GLOBE students around Europe follow in autumn.


What else can you do?

  • Research how the autumn change of trees relates to weather.
  • Find out, how tall your tree is - try the tree height activity.
  • Join webinars organised in cooperation with scientists.
  • Take pictures with GrowApp and make a time-lapse video.
  • Share your results and pictures with other schools at the discussion forum.
  • Get inspired by the research and activities of other students.
  • Connect to teachers and students from other countries - find a partner school through the discussion forum
  • Read the article "Why do the leaves change color?" and learn why and how the autumn change of trees happen.

The benefits are multiple for the students such as observing nature and learning to be patient. They analyse the results, make a hypothesis and give the conclusion in the end which is the basis for the scientific way of thinking.

Ankica Veseljić, OS Banija, Croatia

Activities for students

Additional activities

To observe and record your tree colour change (activities 2 and 3) you will need the GLOBE Plant Color Guide. If you don’t have the Guide, please contact your GLOBE country coordinator.

Do you want to read more about GLOBE green down observations? Download the Green down protocol, Field guide and Data Sheet from the Download materials tab.


Why collaborate?

Apart from new knowledge about phenology, students learn to communicate with international students. Skill essential when living in the 21st century.

How to start a collaboration?

Go to the campaign discussion forum and invite partners to collaborate by post. Wait for your post to reach other schools registered on the forum and get ready for new partnerships.

We've found a partner school, what can we do?

  • regularly exchange data and pictures by e-mail
  • plan a call and discuss your experience and results
  • plan a student research project together