These Jade plants ( Crassulaceae) are a very common succulent house plant, which enjoys its summers outside on the deck. It is easy to care for so long as it is in a free-draining soil and not over watered. New plants are easily started by sticking a leaf or a shoot in the ground.
These are not trees so this is not a bonsai. I have added a piece of Vancouver Island limestone as a backdrop to make a little landscape.