i have a large blue/grey aloe plant 3 feet high and 3 feet wide with multiple "pups". i think it is an aloe striata. the entire plant is turning yellow, all in the past week.we are located in the mohave valley area in bullhead city az. for the last week temperatures have risen to the 110-155 deg f. i don't know whether to blame this on the sun and heat or on overwatering. i suspect overwatering because other similar plants in the area have not exhibited this condition and i have increased watering to compensate for the temperature increase. any advice will be appreciated. thanks to all.