For years I tried using bamboo stakes, wood stakes, even fiberglass stakes, but it always risked my eyesight, with the top of every stake holding a strong possibility for injury.
We had many leftover pieces of copper piping from our former vegetable garden and over the winter I came up with the idea of using cabinetry knobs for the tops of the stakes. I implemented the idea last week and I'm very happy with the results. No danger of getting an eye injury like this:
Here are a few examples of the new and improved copper dahlia stakes:
Ideally, each stake is pounded into place by using a dead blow hammer before actually planting the tuber. This eliminates the damage to the tuber that could occur if the stakes were placed after planting the dahlia tubers.