I've got some of that too, and yes I used to call it sedum but recently learned that it's hylotelephium. Everything says it's edible, so I tried a leaf recently, but didn't find it pleasant. That was a mature leaf in midsummer though. Maybe the early spring leaves are tasty, I don't know. It's extremely easy to grow and to propagate. Mine started from a broken bit of a houseplant that I threw on top of the
mulch in my
greenhouse. The
greenhouse goes a little below freezing for nights all winter but this thing just hunkers under the mulch and then bursts forth in spring. I agree the flowers aren't interesting.