Purple leaves? Normal?
- Thread starter Ezstreet
- Start date
Dontjudgeme
Well-Known Member
It’s a genetic thing. Some strains are prone to purple out, some red, some pink. Cooler temps seem to induce it more, but isn’t the only way it happens. You’re good
.Smoke
Well-Known Member
How to fix cannabis stems that turn purple | Grow Weed Easy
[Answer inside!] What do I do if the stems of my cannabis plant are turning purple?
www.growweedeasy.com
Why Do My Marijuana Plants Have Purple Stems, Stalks, Petioles?
Here’s what to do if your marijuana plants have purple stems, stalks, and petioles.
bigbudsmag.com
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Wizzlebiz
Well-Known Member
Alot of folks keep saying that but generally its a phosphorus deficit. Brought on by cold, lack of nutes or a lockout.
Not to say it can't be genetic but most of the time thats not the case.
Wizzlebiz
Well-Known Member
You do realize that lower temps restrict phosphorus uptake causing that "trait" right?
Yeah.. that's just simply not true at all. It's a signal to the plant to finish flowering. The same reason you see this purple colouring when you switch to 12/12 and the anythocyanin runs riot. That is what causes the colour. It's a chemical within the plant, that is present or not present, in varying degrees of abundance... based on.. wait for it.. genetics.
Wizzlebiz
Well-Known Member
Cool. You keep growing with phosphorus deficits and il keep fixing mine.
Why Your Cannabis Plant is Turning Purple | Cannabis Consulting
So your 5 weeks from harvest and your cannabis plant is turning purple. This is by and large brought on by a sudden phosphorus deficiency.
www.cannabisconsulting.ca
Ezstreet
Active Member
I do believe you are correct about the phosphorus deficiency, I went thru the article you posted and it mentioned leaves twisting and that’s what’s happening as well. I do have pk13/14 would added some to my next watering help?Cool. You keep growing with phosphorus deficits and il keep fixing mine.
Why Your Cannabis Plant is Turning Purple | Cannabis Consulting
So your 5 weeks from harvest and your cannabis plant is turning purple. This is by and large brought on by a sudden phosphorus deficiency.
Wizzlebiz
Well-Known Member
It absolutely depends on why its happening. To determine that we need to know everything about your environment. Medium grown in, nutes given and the dosages of them as well as the schedule.
Lights used and so on.
Ezstreet
Active Member
I’m in a 2x4 tent in mothers earth cooc/perlite 70/30 and I added more perlite so it’s closer to 50/50. using canna coco nutes 10ml of a+b per gal plant takes about 1/2 gal per day I water till runoff in a 2 gal fabric pot. Water ph is 5.8 every time I water. lights are 1 sf2000 about 20 inches from the top of the plant. Lights on at 530 pm off at 530 am. Temps are 78-80f, 45-50% rh lights on, 74-75 lights off. 2 oscillating on 24/7,1 exhaust fan on 24/7, small intake fan that turns on when temps reach above 80. Tent runs in a vacuum. week 8 or 9, closer to 9. lmk what you think
Dontjudgeme
Well-Known Member
I do believe I said strain and low temp isn’t the only way it happens. Outside of the purpling the plant looks fine. Could it be all the things you mentioned, absolutely. Anything is possible. I just wasn’t gonna blindly offer advice when no information was given about his grow prior to my comment other than temperature.
Wizzlebiz
Well-Known Member
I guess my issue is that last little part where you advised him "he's good".
Seems like blind advise imo.
Dontjudgeme
Well-Known Member
Well I’m gonna leave it at that. Not gonna start a useless debate over who’s right or not on someone’s thread. Hopefully he follows your advice and tries to combat a potential phosphorus deficiency. Hope everything works out and the plant does well Ezstreet.
Ezstreet
Active Member
Not doing much, I’m close to harvest just trying to get to that point, I upped the pk alittle we‘ll see how that goes. Thanks for your help man
themda
Well-Known Member
Been there before. It’s phosphorus. I’ll show you the same strain twice. One got phosphorus lock out during flip to 12/12. The other actually turned purple during flower due to genetics and was green all the way through veg and 12/12 until the 6th week of flower. Same exact strain Girl Scout cookies forum cut
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halfbreed421
Well-Known Member
I know my plants need more feed when the purpling starts climbing up my stems. The day after feeding they're all back to green.