I will add this as it has significance...

The oldest tree in Patrut's survey was one in Zimbabwe called Panke, which died in 2011. According to Patrut, it was around 2,500 years old — meaning that it sprouted a few years after the founding of the Roman Republic.

But baobab dating is a tricky, controversial process. Baum says that many baobab specialists are dubious of Patrut's tree dating method, which could underestimate the age of a tree by up to 1,000 years.
[link to www.npr.org (secure)]