A closer picture would help but I'll have a stab and suggest it's a Myosotis, perhaps M. sylvatica, perennial Forget-me-not.

Hi Robert! I'm glad you appreciated that. I loved when Tim posted it. Plus... plant arguments get so heated and involved. Someday when you have some spare time, look up the XW thread on Agave 'FO-076' (currently accorded species status as Agave felipe-otero, I believe). It was epic. Susan Carter's input certainly made an impact on me. And I go along with your suggestion about naming! Or we could just make it intentionally vague to reflect our botanical doubts: Euphorbia "ingens type" or ingens ex hort. Or switch to common names: "candelabra euphorb". Or maybe we could get in the habit of describing its most recent full-size parent: "candelabra-style Euphorbia, 4-5 ribs, small spines, glabrous surface over wavy contours giving an appearance like melted wax, greatly branched, becoming a tree, to 40 ft tall". At least that way, folks might have some idea of what these different plants in the trade will do in their yard.

Thanks, everyone! Now I remember being told the pink one is an anemone. I looked up the Agastache and the salvia, and it's definitely Purple Rain. I appreciate your help! Yes, it's a gorgeous yard, but it's not mine. The gardener was my cousin Terry, whom we lost so unexpectedly last September. (The anemones were blooming at her funeral.) Terry's gardens were featured on a garden tour on Saturday, and I drove up to New York State for the occasion. I took lots of pictures, and when I get them uploaded I'd like to share them here. Meanwhile, you can see a couple of them on my blog. Thanks again! Susan

Thanks for the help!