I have a shimpaku forest that seems to have two different issues. One looks like blight and the other possibly rust? 7 trees total.
Two trees in the back of the forest have spots turning a rusty color.
Two trees in the front are turning yellow, and becoming brittle. I’ve pinched and brushed as much of the brittle foliage off as would come off easily.
Unfortunately have not been able to find any mancozeb, and Amazon will not ship it to Washington state. I did order another fungicide that is copper based.
Thanks in advance!