What is this?

Blue back

Blue back

Well-Known Member
Anyone know what's going on here? first grow of this Old Family Purp. In 5 gal of coco Canna nuits 2 315 CMH. day 44. Only plant doing this. On the very tops only.1549325454425897528423627891037.jpg
 

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Looks burned. It is the new growth effected, so if it isnt heat, or light.... but you said it greens up later
 
They did get heat stress about a week ago. AC triple a breaker with the door closed. Like I said first grow of this strain. Maybe it stressed and the rest didn't.
 
Likely really high pH. It makes that stripey pattern between the veins. Never seen it on buds though.
 
Blue back said:
They did get heat stress about a week ago. AC triple a breaker with the door closed. Like I said first grow of this strain. Maybe it stressed and the rest didn't.
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If it were me and it was only affected after the heat stress I would assume it was the heat stress. You could of had a pocket of more intense heat on that one bud making it do that which would explain why that was the only one affected.
 
Steve7878 said:
If it were me and it was only affected after the heat stress I would assume it was the heat stress. You could of had a pocket of more intense heat on that one bud making it do that which would explain why that was the only one affected.
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Only one plant and all the tops. Obviously you didn't read that.lol
 
Opie1971 said:
It does look like Light Burn/Bleaching to me as well.
Problems that start at the top of plants are usually "Light" associated problems and work their way down.
Nutrient problems usually start at the bottom and work their way up.
It is weird if these affected leaves are greening back up though.
Can you post more pics as they green up?
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Again. It's not light burn im positive. It's also not as tall as the rest. Im just not sure what it is. O well no big deal
 
Blue back said:
Only one plant and all the tops. Obviously you didn't read that.lol
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That's what I meant one plant, no need to split hairs here. My point is still valid you can take it or leave it. Regardless I hope you figure it out so it doesn't happen again.
 
You say it greens up as it grows, but you put a pic of a near ripe bud and its still not green.. I'm thinking light burn, but if you swear its not then I'll assume you've already tried running it with less intensity already.
 
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