I have several fig trees. Some of them seem to be contracting some sort of illness - leaves dry and fall off completely.
This does not seem to weather or water related. Watering them does not help and others that had no water at all are doing great.
Two trees that had the problem when I moved here last summer have since recovered but now two previously healthy trees have it.
Is this an illness? Should I be worried? Is there anything I can do except wait?