I've been seeing herb spirals in lots of demonstration gardens lately, so of course I had to try building one for myself this summer.
Here's how I built mine...
When building any new raised-bed type garden, you'll want to put down newspaper or cardboard to keep the weeds down. I used bricks secured with sticks as vertical reinforcement, but I've seen others use stones or concrete masonry blocks. Be creative! A quick search for "herb spiral" on Pinterest could keep you entertained for hours.
Next I put down a bed of rosemary bush trimmings, followed by some pecan leaf compost, then topped it with garden soil.
Most of the herbs I planted as seedlings for instant gratification, but I planted a few as seeds also. From the top down:
The finished product!
Fun fact: the Maori people of New Zealand use the spiral shape as a symbol of creation or new beginnings. The koru is reminiscent of the way fiddlehead ferns unfurl.