The Dragon Spine bed only needed a few adjustments this year. I did have to take steps to stop rabbits from eating some of the plants, especially the Stone Crop Sedum and Hosta (I did this by using wire baskets that can be removed on days in which the garden is open to the public).
The two Hosta 'Blue Angel' returned this year, but much larger than I had anticipated. In fact they had become so large that they looked out of place in the bed, much larger and taller than any of the other plants. So, I decided to remove them, and plant them elsewhere on the property.
I bought a Halcyon Hosta (Hosta x tardiana 'Halcyon') to replace one of the Blue Angels, but rearranging the location of several others helped fill in the voids that were left behind.
Most of the Cora Bells that I had planted were is such a poor state that I decided to remove them - I have no luck with Cora Bells. They just never return as well as when they first go in. After years of trying to make them work, I have given up. Too bad, the variety and colors are great, but they are not a good financial investment.
I also added two 'Goatee' Goat's beard (Aruncus), one each at the ends of the bed -- near the Tsukubia water feature:
The other between the two shrubs near the Woodland Gate (not visible in the picture below):