I really like 'Glamour Girl' too, Gary.
It's a bit taller than the other newer garden phlox I've put in.
Along with it being completely self-supporting it forms nice (may be the word is) stands.
And I've found it really is quite mildew resistant.
What I found too, about Sombrero Adobe Orange, Lindsay.
Also as you found out, the members of the Sombrero series are hybrids and even if they had viable seeds, seedlings wouldn't be expected to come true.
At the level of wholesale, the Sombrero series are propagated by tissue culture.
Interesting about Flame Purple, Mike.
The Flame garden phlox are among the earlier bloomers here too and several (as said) have so far proven good second bloomers after deadheading.
I'm wondering whether the earlier flowering garden phlox are generally better second flowerers (with deadheading) than later.
Thinking also that there may be a number of factors influencing the occurrence, or the extent, of a second bloom on a garden phlox.
