Mighty Mouse Hosta hybrid

I'm in 9B California redwood coastal mountains--hot/dry summers, wet/cold/windy winters. These hostas were beautiful and healthy when they arrived and transplanted well. I bought two (which were identical when I received them) and created a mirrored symmetrical plan with Coast-To-Coast hostas, ferns, and creeping jenny ground cover. The bed itself was shadier on the left more than the right and got more bright diffused sun thatn I had planned (I had to cut a vine of the pergola) and these little guys did fine compared to the other hostas in the bed with regards to conditions. That being said, there was little to no perceptive growth and the creeping jenny overtook them. I had to cut both all the way back at winter since the leaves got really slimy. We'll see if it comes back. My area may not be suited for hostas.