I didnt start the thread, but thats the thread Im speaking of, and I lifted Browntrouts photos, as I didnt take photos of ours.
I came up with the idea that its a Phytoplasma. Plytoplasma was first detected n marijuana in Iran, in the late 60s, and was predicted to spread worldwide, and it looks like it has. It is primarily spread by Leafhoppers. And Ky is on a major migration route from South Carolina, to lower Michigan. And we have nothined there are way more leafhoppers now, than there were 10 years ago.
We've been talking about this issue here on IC a few years before that THCfarmer thread was started. You'll notice I brought up phytoplasmas on the first page, but to date no one has ever actually confirmed that as being the cause of the discolored new growth. The only confirmed phytoplasma infections in cannabis look much different.
https://www.icmag.com/threads/help-identify-black-death-in-hawaii.323206/