What does 'horologium arborium' mean?

So many people ask me what does the title of your animation mean and how did you come up with the words.
First, my boyfriend does environmental science at uni and he has studied a lot about trees. He helped me with the name and the meaning of many odd words that i have never heard before.

Horology means study of time. Or Horo on its own means Time.
Arborial means tree.

horologium arborium means Time of Many Trees. however i just cut it down to 'time of trees'

horologium arborium is just the scientific name for time and tree.
And you all just learnt something!!!!