There are a few different options to choose from when selecting a stake to hold a newly planted tree in place. The key is simply to find the one that works best for your outdoor space and the tree you've chosen to plant.
This technique is useful for top-heavy trees or for standards, which can be prone to snap below the head if placed in exposed or windy places. Using elastic tree ties allows the tree to flex while supporting it enough to prevent its blowing over.
Vertical stakes can only be used on bare-root trees because it isn't possible to get the stake close enough to the tree on container-grown types because these have larger root balls. Insert the stake prior to planting to avoid damaging the root system.
Established trees that have been moved to a new site benefit from a system of wires attached high up on the trunk. This offers good support but requires a large space. Be careful: the wires can be a trip hazard.