The one on the right, I was told, a blue flag iris. The other two is NOIDs.

I think all three of those are Louisiana iris. Were you given all these interesting plants or did they come with the house? Are you in deep east Texas or southeast Texas? It doesn't rain enough in my part of Texas for Louisiana iris to survive without supplemental water, though they are really tough plants and try.

They're sure pretty, Betsy!

Thanks, ya'll.

Donald, these were all given to me at one time or another. I'm in SE Texas, but I don't do any extra to them, except watering when dry; we have had quite hot summers.

Louisiana iris can handle the heat really well. They will do well in SE Texas which may even be part of the ancestral species natural range. I'm not sure, but it would certainly be similar. I think they are more suited to the climate of SE Texas than the bearded iris. When I was forced into curtailing the supplemental water for mine, I gave some to my sister who lives in the Houston area. They have thrived with little effort. It's an ideal iris for the Gulf coast areas, I think. Well suited to the growing conditions there.