Plant randomly turning purple 8weeks in

ok I have a strain of high sativa based on the many times I grew it about 3 this would be the forth time growing it the first 3 grows were under just a 300w led and about a gallon pot so I upgraded as time went on now I’m in 5 gallon buckets and have a 1200 watt led and a 1000 watt led don’t think the 1000watt is pushing out anywhere close to that it’s made by cob but I have been using the fox farm line up this year big bloom and canna boost in flower did not quite get the results I wanted as in filling in wise but my question is what would cause the same plant I been growing to turn purple this run or could it possibly be a nute problem Im in week 8 or could it possibly be finishing early I was expecting this strain to go 12 weeks any advise would be nice

Phosphorus deficiency

I hear of all kinds of Deficiencies with fox farm. I have their entire line up, I use heavy 16 and was gonna experiment with fox farm eventually but I don’t know If I want too.

Beautiful perfect plant keep doing whatever it is your doing cool your grow area and the purple trait will come out stronger

Could be too cold temps or genetics.

30*c or 80*f is ideal

snoeman032 said:

I hear of all kinds of Deficiencies with fox farm. I have their entire line up, I use heavy 16 and was gonna experiment with fox farm eventually but I don’t know If I want too.

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Honestly it’s been a real good grow with the fox farm line up.I had to switch from the canna line up a lil too high for this grow in particular, but I have had not one nute problem for six months very vigorous growth it all stages

Way2-High said:

Could be too cold temps or genetics.

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At night gotta be right around between 70-75

The1098 said:

At night gotta be right around between 70-75

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That’s still pretty warm I don’t think it would cause it to purple, must be a purple pheno. Lucky you

Is that 8 weeks on 12/12? Just curious because I am currently growing an 80/20 sativa dominant PPP strain that is 8 weeks in from flip today. For comparison sake.

turbobuzz said:

Is that 8 weeks on 12/12? Just curious because I am currently growing an 80/20 sativa dominant PPP strain that is 8 weeks in from flip today. For comparison sake.

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Definitely on a 12/12 all the way thru

Yep, phosphorus deficiency. caused by either nute or ph lockout, very low temps or lack of phosphorus id say...... some people lower lights off temps considerably to really bring out the colours. (Caused by phosphorus deficiency) can reduce bud size and swell though.

The1098 said:

Definitely on a 12/12 all the way thru

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This is mine a week ago at 7 weeks 12/12. I vegged until it was 16" before flipping. Stretched to 65". Never grown sativa before, but I'll top early next time.

The purple is from being stained by the light lol.

Nah, it's just the fall/finishing colors. You've been growing this strain from seed, not a clone? Slight difference in genetics I would suspect.

turbobuzz said:

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This is mine a week ago at 7 weeks 12/12. I vegged until it was 16" before flipping. Stretched to 65". Never grown sativa before, but I'll top early next time.

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Yea, some stretch like crazy!!!