Dark brown spots then dead leaf

[Weezard]

It is Mg deficiency. I had same issue and used CalMag to cure it, but only 0.5 ml/gallon. Some ladies don't like lots of it and they throw nanners.

I did not know that., WW
I have seen some Phosphorus lockout when I used too much Calmag.

But, I assumed that my last hermie was due to my neighbor's porch light.
The bottom branches caught the light and only the bottom branches popped nanners.

If it was the Calmag that pushed her over the edge, that's great news!
Be a good way evoke some pollen, yah?

Aloha,
Weeze