Tree puzzler

[CathB]

We have noticed that small black discs have been inserted in the pavement along side trees - not just along the front but on side streets too..has anyone got any idea what they are for.They were not there in July

 

[whaleywanderer]

Good question Cath, they are also along the by-pass, we were wondering the same, hope someone knows the answer.

 

[Gommar Goffer]

some form of irrigation system?

 

[Sparky]

I wonder if it's some sort of "tree health" monitoring system, maybe a precaution since the pine tree fell in the square .

 

[CathB]

I will have to photograph one. They look too small and are along side all sorts of trees not just pines

 

[Papillon]

Was wondering myself and saw a couple of young lads installing them so stopped to ask. They are micro chips that monitor the trees, the info is downloaded regularly to a central computer.
Seems they they are in Pollensa as well.