• Dig a hole to fit a Root Restriction bag
• Fill it with a growing medium suitable to the tree, and plant it in the bag
• Fill in around the hole and mulch for water conservation, then watch it grow.
A 30 Litre bag will not let your tree get taller than about 2 metres and when you move, you can take it with you and fill in the hole.
When I realised I coud do this, it opened up the options for growing food where we live, knowing that my investment of time and energy would not be lost.