Hi, this is a strain called ICE...growing outdoors in a 10gal pot. And I'm wondering if these black leaves are bad or just part of the strain- OR cold weather? But if it were cold weather then my other plants would have turned too huh? All 3 plants of the same strain have all black tops like this. To me, it seems like a strain thing but the color is just so weird!
Prolly just strain specific man, enjoy those funky colored buds! http://forum.grasscity.com/index.php?/topic/1383387-2-Bagseed-Northern-Lights-Auto-250w-CFL
they have to have a genetic disposition to get colour in the leaves, but low temperatures will then trigger it. Many strains can get colour like this, it's pretty common