CA roses, I do grow some Austins but have been moving away from them due to the heat conditions where I live (similar to yours). I used to live in Redlands out in the Inland Empire and still miss living in that city--love the historic homes!
When I first started growing roses, I thought that the DA roses were the only roses that had those lovely 80 plus petal blooms. Oh, not so! Lots of other roses have the "DA look" but do well in much hotter temps. So, I am not sure, do you want that DA look or just a DA rose? That being said, I have grown several of his roses (and still do) but none that are white. Many of his lighter colored roses will fade to white in the harsh sun. My Mary Magdalene does well in heat and sun and does fade to white. She tends to stay on the small side for an Austin. She is also on her own root for me which may be another reason why she stays small (plus I have only had her less than three years and most Austins take some time to come into their own). I love her scent and think she would probably do even better with afternoon shade. Right now, she is in one of the sunniest spots in my garden and gets reflected heat and sun from my white fence all day long.
Other Austins that do well for me (especially with afternoon shade) are Princess Alexandra of Kent, Pretty Jessica, Munstead Wood (although he is pretty much in sun all day long). None of those are white roses. I tend to stay away from white roses (not that I don't like them) but my fence is white and the flowers would get lost up against it (very small yard and beds). I want roses I can see!
Mary Magdalene
I also grow (or have grown) the following DA roses, Brother Cadfael, Lady of Shalott, Emily, Heritage, Evelyn, Ambridge (does well with sun and heat but is not white), Sister Elizabeth, Judy the Obscure, Mary Webb (which fades to white in two seconds), Alnwick, Peach Blossom (one of my favorites and does well in the sun but is not white), Sharifa Asma (another favorite that would do fairly well with afternoon shade but is not white).
Whoa, sounds like it is hailing up a storm outside right now (1:49 am). Need to go!
