Geranium.

We have numerous different varieties of geranium in the garden and,  unlike both Mrs TD and the bees, I have great difficulty distinguishing t'other from which. The flower on this one is a little too large to be the wild species though it does grow like a weed as do most of the flowers that we have; it's not that we're particularly good gardeners, it's just that they're the only ones that we manage to keep alive.

I've just posted yesterday's, "Bee Beard"  and as a footnote, I have to report that the colony did swarm today so we have no idea what was going on.