The Grow Awards 2026 🏆 
What causes the appearance of purple on the stems ...
ButterfliesLittleFarmstarted grow question 4y ago
What causes the appearance of purple on the stems and branches? It can be seen in the photos. Thanks in advance for the answers.
likes
Organomananswered grow question 4y ago
Genetics mainly, or phosphorous deficiency in some rare cases.
TheReefineryanswered grow question 4y ago
Sometimes red stems can be down to genetics, hear stress or she may be hungry.
Good luck!!
likes
Complain
Hempy_The_Kidanswered grow question 4y ago
Can be genetics or stress. Nice looking plant.
1 like
Complain
Similar Grow Questions
Solved
BotanicAlchemist
Issues with purple stem and yellow leaves in Autos starting at the bottom of the plant and moving it's way up the plant ?I grew a Lowryder and this really hurt my yield whatever it was i was supposed to get around 20g or so but I ended up getting 8g and its not the first time this has happened.
I want to grow a Cheese auto (Expert seeds) and I don't want my yield to suck again what can I do ?Leaves. Color - Yellow
Plant. Stem - Red or purple
Setup. Strain - Autoflowering
4y ago
2
3
Solved
delta_420
White bumps/lesions on stem base Day 19 veg auto, is it an issue?White spots/lesions growing on stem base but not on leaves or anywhere else?
This started within the last 1-3 days.
The stem "splitting" on the skin was present since it was sagging and bounced back fine.
Worried this is mold/infection from soil. Packed more soil onto the top (!)3y ago
1
Solved
Darktide
Nitrogen Toxicity-How will I know if it is better?I am looking to get some insight into nitrogen toxicity.
I have read that any affected leaves will never recover.
*Do leaves get lighter?
*How will I know if the toxicity has been corrected?
*How often to flush?
*Additional info greatly appreciated.
Thank you.5y ago
1
1
Solved
Raidoiu
Problema di PeppaBuonasera ho bisogno di aiuto. non so cosa sia successo in 4 giorni, le altre stanno benissimo lei no.Sono stato attentissimo ai macro e a tutto ciò che necessitavano.... Sono stato via 4 giorni l'unico valore che è uscito fuori norma è la temperatura 28.5. Help me!6y ago
3
1
Solved
JustGrowWithIt420
Leaves bright greenSo I have ruled out the fact that this is not a ph problem, have been properly watering at a consistent ph of 6.5, tested the run off today and it's at a pH of 6.4, also there is purple stems and the main stock has purple running through it as well?!?! Is this lack of pk? ca/mg?5y ago
5
5
Solved
Frm11001
IDEAS?! double cookies auto BSFTuve exceso de N al comienzo de la floración, hice lavado de raíces y todo empeoró! ahora, a casi 1 o 2 semanas de finalizar la floración,ella se encuentra así.Luego del lavado de raíces, continue con fertilizantes normalmente igual que las otras y las otras están en buen estado!Leaves. Color - Yellow
Leaves. Color - Dark-brown
Plant. Stem - Red or purple
5y ago
6
Solved
FlynnRyder
I'm a slow learner...Hey yall, having issues with red stems, ph fluctuations, leaf discoloring, and leaks but thats my problem haha. I just had a terrible week and I wanted to make sure a nute change was my only real problem in wk 4. I only wanted to veg 4 weeks but thats not possible or I botchedLeaves. Other
Other. Other
Plant. Stem - Red or purple
5y ago
4
4
Solved
malumalu
Does They are growing well ?
How much they gonna yeild?(100wattslightled/5galbuckets)Buds. Not fattening
Plant. Stem - Red or purple
Techniques. LST
3y ago
1
1
Solved
SaintLoud
Yellow spots and purple stemsI have these yellow spots on my fan leaves and purple stems on just one of my Girl Scout Cookies. Both being fed the same thing, temps are stable and so is humidity. Don't understand what's up with this girl. 1st 4 pics of issue plant last is of her healthy sister.Leaves. Curl up
Leaves. Veins - yellow between
Plant. Stem - Red or purple
4y ago
5
2
Solved
Poz83
Why is has my plant gone purple when flushing for harvestSo I have been flushing Blueberry Cheese for 9 days now, buds arent compact so thinking maybe this is an autoflower? Anyways, since flushing the stems, buds and leaves are going purple and my PPM and EC is still very high in run off. Any Advice pleaseBuds. Other
Leaves. Color - Dark-purple
Plant. Stem - Red or purple
4y ago
3
4
Solved
GlockAbuser
Nutrient burn, Light burn, or Phos Def? red stems purple bruises,Noticed red lines leaking red into the leaves with purple bruising, and the starter bottom leaves seem to be turning yellow, with the leaves above looking dark green with spots. Is this signs of light burn or nutrient toxicity? And is it lacking phosphorus or just the strain gen?Leaves. Color - Dark-purple
Plant. Stem - Red or purple
Setup. Lighting
2y ago
3
4
Solved
Familytrees19
Red/purple stem with yellowing leavesI got red/purple stems and stock as well as lower leaves like a faded yellow... I think it’s a mag deficiency and wondering how to correct it?? And if it is it even what I think it is?? Any help plz?? I have pics below and can take more if needed5y ago
1
Solved
Erasmus
Why are the branches turning purple?What is causing my plant stems to start to turn purple? They feel stiff and dry, could it be low humidity or am I not watering enough or to much?
I water 1L/plant ever other day. PH 6.3-6.5.
Should I be concerned?Week 10
Plant. Stem - Red or purple
5y ago
2
4
Solved
hylian
My cookies kush girls be stressed. Transplant stress? Magnesium? Heat? Need bigger pot?Transplanted into solos with FFHF 4 days ago. 24-0 with 25w light up until yesterday when I put them on 18-6 & into the tent for first time. When do you guys use general hydroponics trio and cal-mag when growing in Happy Frog under TS600 Mars Hydro LEDs? Girls be stressed :(Leaves. Color - Yellow
Plant. Stem - Red or purple
Feeding. Schedule
5y ago
3
2
Solved
ChefdexV2
Deficiency and assimetric developmentMy girls seem to have a deficiency, strangely enough, the gal with the most signs of deficiency is doing the best in bud production. Any ideas on what is going on here and what is the cause of the deficiency?
There is also some purple on the stem3y ago
5
9
Solved
Bdawg
High ph run off in coco pale leaves red stems.In coco pebbles. Ph in 5,8 ph out 7. Hers few times not to wurry about ph run off unless problems. Wel few problems growin slower red stems and pale.see if you can help peeps.cheers
First pic pale think its on mend.
2nd pik looks droopy an bit overwatered to me .
3rd pic of leafPlant. Stem - Red or purple
4y ago
1
2
Solved
Sorrowcz
Hello guys
I have problémy with leafs and purple stem on one plant of 7..
This plant is completly different of all others. She have minimum leafs and she start flowering 7 days before others..
Any ideas what i can do with that?Leaves. Color - Yellow
Plant. Stem - Red or purple
3y ago
1
5