Half banana
Good one anony mous, but the fact is that we can date trees by a the system of scientific overlapping...
Thanks Half banana. Here is the evidence.
The german university Hohenheim near Stuttgart has the world longest tree growth rings calender and he goes back 12.500 years.
https://botanik.uni-hohenheim.de/archaeo-palaeo_dendro_hoh-jahrringkalender