Contestants have to determine a growing tree strain diameter, height, age and species without any special measuring equipment. Time for completing the task is 15 minutes.
![](https://aianduskool.ee/hortichallenge/wp-content/uploads/2019/02/collage-1.png)
Contestants have to determine a growing tree strain diameter, height, age and species without any special measuring equipment. Time for completing the task is 15 minutes.