Sugar leaves turning purple? (Week 8 of flower)

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niv141

Member
My first female ever!
Some info:
soil, 2 gallon pot, using organic nutes (compost, kelp, humus, fish emulsion, fulvic acid, and granular grass starter which is very rich with P)
Watering every 3 days, ph 6.75, 81F day temp, 75F night temp.
Growing under a single cxb3590 @ 45W + sidelights in the bucket (im growing in a spacebucket)
canopy is getting 48k-58k lux

Just 6 days ago every single sugar leaf was completely green. I went away for the weekend, came back 3 days later and saw some darker shade appearing on the sugar leaves of the 2 main colas.

another 3 days went by, and with each day the purple was getting stronger.

Last time I fed her I gave her kelp and that was 1 month ago, only watered ever since.

I read that this can be caused by cold temps, but my temps never go below 75F.

One thing that is important to note, the purple is a lot more visible on the 2 main colas, the middle colas have some sort of hints of purple, and the lower colas have no purple at all.
So my best guess would be light burn? for now I lowered the wattage from 45W to 42W untill i get further info from you guys.
 

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Thundercat

Thundercat

Well-Known Member
Very possible its just genetics. I've got a cultivar that ALWAYS turns purple at about 7.5-8 weeks, and thats part of how I know its gonna be ready in about 2-3 more.
 
min0r

min0r

Well-Known Member
niv141 said:
My first female ever!
Some info:
soil, 2 gallon pot, using organic nutes (compost, kelp, humus, fish emulsion, fulvic acid, and granular grass starter which is very rich with P)
Watering every 3 days, ph 6.75, 81F day temp, 75F night temp.
Growing under a single cxb3590 @ 45W + sidelights in the bucket (im growing in a spacebucket)
canopy is getting 48k-58k lux

Just 6 days ago every single sugar leaf was completely green. I went away for the weekend, came back 3 days later and saw some darker shade appearing on the sugar leaves of the 2 main colas.

another 3 days went by, and with each day the purple was getting stronger.

Last time I fed her I gave her kelp and that was 1 month ago, only watered ever since.

I read that this can be caused by cold temps, but my temps never go below 75F.

One thing that is important to note, the purple is a lot more visible on the 2 main colas, the middle colas have some sort of hints of purple, and the lower colas have no purple at all.
So my best guess would be light burn? for now I lowered the wattage from 45W to 42W untill i get further info from you guys.
Click to expand...
what strain? looks genetic to me.
 
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Apalchen

Well-Known Member
A lot of my plants turn purple at the end especially when I'm flushing. I don't know much about dirt but since you said haven't fed in some while that could be the case.
 
Renfro

Renfro

Well-Known Member
I get purps from my glue like that. It only happens where they get the most light. It's pretty normal for some strains so I wouldnt be concerned. You can try adding more phosphorous to make sure thats not it.
 
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Apalchen

Well-Known Member
The bud they came from doesn't necessarily need to have purple leaves. I've grown the same cuts over and over and get different colors sometimes, last fade was more red than purple but same strains.
 
coreywebster

coreywebster

Well-Known Member
Some signs of slow light burn going on with the fan leaves.
Don't think that's related to the purpling sugar leaves though.
 
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