If I didn't have a pile of free bricks, I wouldn't have done this.
Well, maybe I would have, but I would have used iron ore stones instead (which we have quite a bit of).
MaryE said:How large is this spiral? It looks like you will have to have some stepping stones in at least the outer spiral to be able to tend the inner parts without stepping on the soil.
It is about 7 feet in diameter. Meaning if you are standing outside it, it's a 3 1/2 foot reach to the center. You can place you foot on the first level in order to reach the top. I found that it was quite easy to reach the center.
With the new spiral being made with brick-and-mortar, it'll be strong enough that you could climb it if you wanted.