No-name begonias

Begonia 'Helen Teupel', sold unlabeled

In an online begonia group that I frequent, not a day goes by that somebody doesn't post one or more photos of begonias they got from a friend, or purchased without any label, asking "what is it?"  These are often rex hybrids, one of the groups I most often see offered without any names in garden centers.  There's something about rex begonias that seduces people into buying them, but there's apparently also something about them that makes people lose their names.

Hardy begonias: the next generation

In a previous post (Beyond Begonia grandis: new hardy begonias), I discussed several begonia species and hybrids that have been around for a few years and were already known (or purported) to be fairly hardy.  In this post, I'll discuss a new generation of begonias I've discovered to be hardy in my zone 7a/b garden in just the last few years, even though some of them have been around much longer than that!