Do not use bare wire as this will damage the stem. You have many options here. You could place a framework of stakes around the plant, then weave twine around the stakes to form a cage. Or attach twine around the stakes then string it between the stakes through the middle of the cage. You also should visit your local garden center to see what they have available in the way of plastic and metal rings.
Timing is critical in staking.
Do it early, just as soon as the new stems appear. Apply single stakes before flower buds are well formed and opened. The stakes and ties will be hidden once the new foliage starts to grow.