Asked October 11, 2023, 11:33 AM EDT
In the last few months some of my jade plants have acquired scabs or discoloration. I attach a photo. I have been raising jade plants for decades, never over-water, and have not changed any of my care practices with them. So it is quite surprising to see this emerge. I looked online but it doesn't seem like powdery mildew or black ring. Any ideas or suggested treatment? I am baffled, as I've had the main plant for half a century, and it has never had an illness. Thank goodness it has been spared, but some of the younger plants (3-5 years old) are cuttings from it, and they have these marks. Thank you!
(The plants reside on a sunny southern window seat, and have not been moved in years. I also have not acquired new plants that are near them, that might infect them with something.)
Cuyahoga County Ohio