Position: The Jade tree, considered an indoor tree in most temperate zones, (see your zone)  it can grow outdoors in full sun (in sufficiently high temperatures).  In the winter, always keep temperatures above 5 degrees C (or 41F).  It needs lots of light or even full sun.

Watering: Jade trees can hold large amounts of water inside their leaves.  Water sparsely and allow the plant to dry out a little bit between watering.  During winter time watering can be as seldom as once every three weeks,  only if the tree remains in a cold area.  Monitor your tree closely and water the moment the soil dries out slightly.  The Jade Bonsai is not as particular about over-watering as most other succulents.  Though overwatering can damage the tree.   Peat moss (humus) is what retains the most water and therefore should be used sparingly. 

Feeding: Once a month during the growth season (spring-autumn).

Pruning: As a succulent, it contains water in its trunk and branches; they tend to bend from their weight.  Jades respond well to pruning, prune regularly to force the tree to grow branches, but remove the branches and leaves from the lower trunk.  Do not use cut-paste though, as this might lead to rotting.

Repotting: Repot the three every second year in spring, using a very well-draining soil mixture.  After repotting, don't water the soil for about a week, to allow the cut roots to dry and callous.  Callousing is essential to rooting pruned branches.   Otherwise you'll get root rot.

Propagation: Easy to propagate using cuttings during the summer.

For more detailed information on these techniques, see Jade Plant care.