Now that you mention it, Lin, I spent some time in riverside ca, the hottest day was 114...I was not untested in plants at the time, atleast not like I am now...
There was a big sized selloum planted at the house I stayed in( as well as the most delicious citrus I've ever had! The lemons were sweet enough to eat straight!)
It was in rather deep shade, albeit a very high canopy, no direct or even dappled light penetrated...I KNOW they never water it, but as dry as it was there, and boy was it dry by my east coast standards! The philo looked magnificent!
Nothin like the monsters at Lin's rentals! Small by comparison!
But it was a nice deep green, it looked great!
I just remember thinking at the time...wow I didn't know you could grow such a plant in ground anywhere...I had only seen them as potted house plants!
Sure wish I had this interest then!
Instead of smuggling two native lizards home in my bag, I'd have brought back a bag full of cuttings!