how and when was the first tree grown

Question: how and when was the first tree grown
- Keywords:
  grow,
  tree
Asked by Joey Da Gangsta to Adrian, Gaia, Jim, Scott, Vicky on 11 Mar 2016.
- Adrian Buzatu answered on 11 Mar 2016:
  
  Not just animals evolved from lesser animals. Plants also evolved. Trees evolved from plants that were no trees. It’s a bit like asking how the first hen appeared. It also evolved from previous animals.
- Gaia Andreoletti answered on 12 Mar 2016:
  
  Did you know that the Earth’s oldest known tree stood nearly 30 feet tall and looked like a modern palm? Interesting, no? 😉
- Scott Lawrie answered on 14 Mar 2016:
  
  The earliest agriculture (humans planting plants) was around 12000 years ago, but this was mostly corn, wheat and other plants for food. The first human-planted tree is less well known, but it was probably much more recently when we finally started to realise that we’d run out of trees if we kept chopping them down and not replacing them!

Question: how and when was the first tree grown