Budding cannabis, rusty leaves !!!

[SlimeyCatt]

Week 6-8 for flowering cannabis. I have 2 450watt lights for these auto flower plants grown in coco coir. Fed Advanced Nutrients Sensei Coco BLOOM. All of sudden started doing this orange rust, any ideas?

 

[SoOrbudgal]

Looks like lock out root issues have you flush with plain Ph water?

 

[SlimeyCatt]

yeah did that for about 3 waterings

 

[SoOrbudgal]

Well shoot then seems like this is a point where most of us who've grown weed run into issues. Late in flower they don't drink as much and so here's what " i " have done late in flower i allow them to dry really well only water when totally dry lift the pot. Where i would water every 4 days i wait 6. They change from being hungry/thirsty to just maintaining themselves and feeding off their stored nutes in plant. Ph'd water and molasess is all i give last few wks, then 1wk total dryout.

You got some good looking buds showing that plant is letting you know she's done feeding nutes that's what i see. Good Luck

 

[Eliot Pryor]

I have had plants look like that. I've always thought it was my lights were too close.

 

[uncledoug]

How far are the lights from the canopy? Are the dead leaves only on top or did they start down low and work their way up. If only on top, I would suspect the lights are to close, if it started low and worked its way up, I would say your getting close to the end and the leaves are getting old and dead.