Purple stems

At its root, oxygen.

can be a p/k issue mid/late flower but most of the time this is just genetics with modern light fixtures. you can see that this is the case if you have clear shadowing effects of the color, like green where your light doesnt hit directly

salut c'est tout a fait normal . etn fait cela peut venir de deux raison a se stade surtout. lla première tu es proche de ta récolte et elle puise des nutriments qui peut faire perdre le vert . ou lla génétique aussi .sur une de mes planteq je l'ai aussi .j'espère que cela a pu te rassurer. bonne culture et bonne récolte.

Nothing you can do to fix it this late in the cycle...............usually phosphorous related.................flushing every third irrigation is probably the cause. I have never associated purple stems and magnesium, genetics yes, but magnesium, never.

Looking at your photo in the image purple stems can happen for a few different reasons, especially when you're already in week 8 like the tag says. Often it’s just genetic, and some strains naturally show these colors as they mature and fade. However, it can also be a reaction to environmental stress, such as cooler nighttime temperatures or high light intensity. If the rest of the plant looks healthy and the buds are developing well, I wouldn't worry too much about it at this stage. Just keep an eye on your pH and nutrient levels to make sure it's not a phosphorus deficiency, but usually, this late in the game, it's just the plant doing its thing. Happy Growing Growmie🌱

@m0use u think mb in outdoor soil could be some minerals? like P mb. And that's why em didnt turn purpl ? 😂

👇😨

For me when the plant is healthy and goes purp its normally genetics. Or indoor growing conditions. But nothing to freak out about. I have had a bunch of HoneyMint plants before. 3 grown indoors and 1 outdoors. Both groups performed well and harvest was fine. The indoor ones went purple, the outdoor one did not. It had ample Mg as well as all other Micros and Macros. It just went purple when growing indoors and did not when growing outdoors. They had the same feed, dry amendments. The snap test is not a great indicator. as plants that have good turgor pressure will snap if bent to 90 degrees. and some users here are caustic as fuck grain of salt with the ones who want your attention or you'll get burnt out. In you pic things are looking good. your diary's video update also looks very good. I would not stress about it. Keep doing what your doing.

Stress and or hunger for K (from NPK)

i can tell fo sure that if his purple stems were a recent event (about a week) then it's 100% P deficiency he's got a severe Mg deficiency that pbly would take about 2 weeks all else is nonsense

From the pic, the purple/red stems don’t look too concerning and are likely genetic, but they can also be caused by stress. Common issues are colder night temps, strong LED lighting, pH being out of range, or a mild phosphorus/magnesium deficiency. Since the buds and leaves still look pretty healthy, I’d say it’s probably minor unless you start seeing leaf discoloration, slow growth, or weak bud development👊👍

i can argue about light intense, S, a possible magnesium problem, chlorosis with spots in mid and lower growth - IF U LOOK at his diary then u see a pattern of chlorosis and yellowing at TOP, MID and BOTTOM of a plant (if u don't blind ofc) SO it is SEVERE Mg deficiency - Light intense rly ? BS if it was true then we'd see burnings and canoeing (i don't see it ... are U???) - S ? S def will lead to woody base of stem (TS also can check this up) - genetics ? i hightly doubt (TS can google its strain) - about HELPING (looks like i'm the one who can explain simptoms other then just write all the options that u get out of ur head) PS u can PM me and i tell u how to fix this or don't 👈

Matt there is an easy way to know. That picture you have of the stem. Do a 90 degree bend on it. If it is brittle and snaps before the 90 it's a magnesium issue.

probably genetics... You can reference a leaf symptom chart... Red or purple streaks in stem could be low S. You'd have other coinciding symptoms to rule that out - paling from inside-out at top being one. corky trunk at bottom another. Low p causes red petioles, but even that is not 1:1 and is more often just exposure to high intensity light. mg deficiency would show chlorosis with spots in mid and lower growth. I don't think this is mg-deficiency. I think this is just genetics if the general health of the plant is good. More info needed (not asking). You have more information at your finger tips.. reference a leaf chart and eliminate possibilities as best you can. Some plants just get purple stems even if the plant is supremely healthy.

So mattdecario, the answer is by general consensus a possible magnesium problem. Sorry you have had to see other nonsense in the answers. Some people on this site can just be pricks who have no intention of really helping out. Go to the website I mentioned to double check and it will tell you how to fix it. You'll probably be wise to take a sample of your runoff water next time they need watering and test the EC and PH so you have a gide at where your grow mediums at. Don't worry it's not a massive problem looking at your grow. Keep growing 💪

growdiaries.com/grow-questions/92015-harvesting-or-wait 👈 @JUNGLE_B4RNS is there Mg def too ? 👆 same purple on the stem 😤

actually it is severe Mg deficiency (checked his diary) and starting P def this time u was half right pbly bs u checked his diary before me so we won't know who's right...

John magnesium deficiency, can trigger the synthesis of anthocyanins as a stress response, which may manifest as a reddish or purple hue on the stalks. Please don't attack people if you disagree. You are making my pussy dry lol.

@JUNGLE_B4RNS ahahaha it's like wneh u told me to increase Mg ppm to 300 ??? don't u know that 300 ppm could F up plant pretty good or u just wanted to F me up ? i'm often see ur responses and i can assure u for 100% that it is U who don't know F

@John_Kramer it’s the first of a Mg deficiency…. Don’t even try to start arguing with me, when you have absolutely no visual background of your crops and skill to show …

I think it’s merely some anthocyanin production as a mild response to intense LED light. Some strains or individuals are prone to exhibit such colors, while others are less so. Some even exhibit stem and petiole colors like that nearly automatically, without super intense light, such as Guava strains. Based on the photo, the plant’s other characteristics appear pretty decent, so I wouldn’t worry. If you see other signs suggesting issues or deficiencies, you could correlate them with your red stems, otherwise, it may be simply a trait and not a problem.

https://dutch-passion.com/en/blog/a-visual-guide-to-cannabis-deficiencies-n987👈👈👈👈👈👈👈👈👈👈👈👈👈👈👈

OMFG are u kidding guys ? what's the crap are u talking about ? Mg ? check MFing list of deficiency for Mg u dumb MF cold ? when he has 23C light intensity ? FFS get the F out, ur stupid suggestions will harm not experienced growers... why are u doing this ??? just to do harm ? 😲😣😤

It looks stress related from lack of magnesium. So hard to just nail it down by a single picture.

Magnesium shortage, mostly from light energy exceeding photosynthetic capacity of the plant, but also can happen with overwatering. Magnesium is the central atom in the chlorophyll molecule, surrounded by Nitrogen atoms. It gets used up at first during the photosynthesis process. Magnesium is essential for absorbing red and blue wavelengths. When there’s a lack of magnesium the red and the blue spectrum reflects (red+blue=purple) from the thinnest part of the chloroplast like leaves stems and petioles first then the branches and leaves veins.

Purple stems usually come from three things: cold temperatures, genetics, or phosphorus deficiency. Since you’re in week 8 of flower, it’s most likely just the strain showing its colors or a slight chill at night. Cold temps bring out purple pigments naturally lots of strains do this in late flower, especially if nights drop below 60°F. It’s not harmful, just genetics expressing itself. Phosphorus deficiency can also cause purple stems, but your buds look solid so that’s probably not it. Check your nighttime temperatures. If they’re dropping significantly, that’s your answer. If you’re in a warm environment, it’s just the strain doing its thing. Either way, it’s not a problem purple stems in late flower are usually cosmetic and sometimes even a sign of a nice strain phenotype.

Hi, I think it could be due to a slight lack of magnesium, maybe you PH is slightly out of range, maybe bad watering habits or light intestity. Maybe its in the genetics of the plant. To be honest it doesn't look like much of a problem from how far along you are in the grow. Check out a site called growweedeasy and look at magnesium deficiency and see if that matches what's happening.

P deficiency