[dmforcier]

Originally Posted by swellcat

There was a Nice, Fat Manzano Bush in Zone 10b, of all places . . .

Wow! That's a serious plant! But note where it is - right up against the house and under an overhang. It gets good sunlight (apparently on the S side) but also good shade and cool roots. My successful plants (in pots) did okay in 8b direct sun, but really perked up when I moved them into partial shade. I maintain that air temperature isn't the issue so much as root temps and, in some varieties, the amount of direct sun.