So this is weird *black leaves!*

So This is weird....LATE LATE into flower my plant started doing werid things, like getting black blotches on leaves then actually the entire leaves starting to turn black only on flowers then After checking it out some fan leaves were actually totally black.......

More purple than black? Low temps.....?

what the strain?

Cold room mate. nether cause me problems just funky looking weed.

Looks like too much nitrogen... but that would effect your flowers and you prolly woulda noticed that.
I'm gonna say low temps.

cold temps

i WOULD HAVE TO CONCLUDE ON COLD TEMPS oops caps, it was getting 30 degrees outside at night for a while and probably at least 50 in the room and when lights on it was 80-90