How cold did it get in the last week and month where you are?

I think we had a low of 40?

I know croton will drop their leaves in extended cold below 50. Hibiscus certainly won't be happy with 40. How long was the cold spell and where are you? I don't see any fallen leaves on the gravel. Are you supper tidy or do you have deer?

Hi we’re in PHX- it was cold to 40 at night for maybe three weeks- high of 70 during the day- the leaves fell one day when it rained and we swept them all up- it was around the time all the leaves fell from the pistache- which is actually mid to late January here

Any thoughts on the spots and the Beijing on the other plant? These leaves looked similar before they all dropped

Huh that was supposed to say veining. Odd autocorrect