Under normal conditions, it is not necessary to stake trees after planting if they can stay upright on their own after the nursery stakes are removed.
Remove the tree stakes as soon as a tree can stand on its own; almost always within one year of installation.
Staking trees improperly or for too long can weaken or damage them.
Source: Xeriscape, Landscaping with style in the Arizona Desert: A step-by-step guide for planning, installing and caring for you landscape
Remove the tree stakes as soon as a tree can stand on its own; almost always within one year of installation.
Staking trees improperly or for too long can weaken or damage them.
Source: Xeriscape, Landscaping with style in the Arizona Desert: A step-by-step guide for planning, installing and caring for you landscape