Sedums and sedum mats

I've so enjoyed our sedum bed in the mountains as it's provided all-season interest for almost 4 years. And it continues to do so.

But the combination of a cool, and very wet summer, with an extremely cold winter left me with some gaps to fill.  A non-sedum, Irish moss (Sagina subulata), was the most visible hit from the cold winter, so I've replanted the surviving bits and tidied it up (actually, it had gotten to be a bit too expansive, so this wasn't a bad thing).

Some of the sedums on the lower side, however, seem like they've totally vanished. 

So, I was delighted (and couldn't resist buying) these cool mixed sedum mats (produced by Drop and Grow, according to the label).  I don't know anything about their company or the process, but I was entranced by them at the local big box store.

Sedum mat

Now, of course the S. angelina is a bit assertive, but the mix is quite nice.

I'm planning to plug in bits in the sedum bed, but also do some new plantings at the edge of the retaining wall in the piedmont, too.