Hi Abigail,
I'm so interested in the plants you've listed in your herbaceous layer! I want to create an herb spiral in another area of my site and I had planned to include some of the herbs on your list. I have a few of them tucked into my perennial beds already, but I would like to eventually gather them together into a cohesive herb garden.
Unfortunately, I'm unable to open the file you attached. Would you have time to convert it to a .pdf format and repost it? I'm just so intrigued by your description of a deconstructed herb spiral that I would love to see your elevation view.
Thanks,
Deb