Well it's a Ludwigia species, a group of native wetland plants. Not really something people plant but don't let it stop you if you like it.

I love that bloom, thanks for the post

Dainty flower I like that. :-)

Ruth Z - I keep asking Stephanie in Colleyville if she is going to do any meet ups for DFW Iris Lover's and I get no response. I know you met with her over a year ago.
If I don't see any action I am going to drop from that group. I like active meet ups.

Gretchen, I'm not in that group. Iris's don't seem to like my yard.
I was just looking at Iris's online last week and thinking I might try a new one.