Follow-up: Four out of fourteen S. clevelandii cuttings had roots. On one cutting the roots are just starting, so I put it back in the perlite/vermiculite medium for another week or two. For the rootless cuttings that yet have new growth, I trimmed them shorter to remove the black stems and re-stuck them. Along the way I've lost five cuttings: three simply wilted; two developed (apparently) the botrytis you described. So I'm four for fourteen so far. I have a lot to learn! OTOH, I'm impressed that it took only three weeks or less for good roots to develop on those that succeeded. I now have some S. eremostachya cuttings (taken Mar 29 and Apr 3), so we'll see how they go. The natural populations I've found grow in gravelly soil around granite boulders, often on north-facing slopes. I can post photos if anyone is interested. They are at about 3600 ft elevation, and they experience colder winters and high winds that we don't have here (my elevation in Temecula is about 1140 ft.).

According Google Image search, it's from this design firm, Breathing Room Design and she's on Houzz as well

They will all lean toward the sun. Your stems will have the flowers mostly in the sunny side. What marla is describing are Upfacing, Outfacing, or Dowward facing varieties. That is dependent on the culivar, and has nothing to do with the light source. You can have anyone of those 3 types, and still have it leaning toward the sun. As long as you are not dealing with the extremes of planting against a house, though, it might not be noticeable. They need a certain number of hours of sunlight a day. If they have that minimum, they are much less likely to show any leaning, though you still may have more blooms on one side than on the other.

Not sure, but if it's from Amber Interiors get ready to open up your pocket book. Those fixtures look hand blown. You may be able to find a hand-blown fixture from Etsy.com, similar and for a quarter of the price. I've found some amazing pieces from there.