First of all, I don't think that you want to be here photographing in the summer unless you are familiar with 105 to 115 degree temperatures.

Second the cactus typically bloom in late March to early May. This past summer our temps began running consistantly above 100 by June.

There are cactus located on I-17 from Flagstaff to Phoenix, from Showlow to Phoenix...and probably other places of which I am not aware.