The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Purple stem
Tropicalstorm
started grow question 4y ago
Hi all! My plant started flowering 2 days ago and I just spotted two branches with these purple lines. Should I worry?
Solved
Plant. Stem - Red or purple
likes
WeedManiacLove
answered grow question 4y ago
No debes preocuparte para nada, las lineas moradas pueden salir hasta por un leve estrés en la planta, si no ves otro síntoma debes sentirte feliz por tu trabajo! Buenos humos! 👌
1 like
Complain
Selected By The Grower
KingSalomonsWeed
answered grow question 4y ago
Nein, kannst beruhigt sein. Ist entweder Genetik, oder Lichtstress.
1 like
Complain
Similar Grow Questions
Solved
NIagaraFalls420
Leaves continue to get yellow and fall off. Plant dying, bud looks okay.
Still having issues with my plant. Leaves are getting more and more yellow and 2 have fallen off. Pretty far from harvest still for the leaves to be getting this yellow. Temps in tent are 18-22 c with leds 200w act wattage. Overwatered once but I doubt it would cause this. Ideas?
Week 7
Leaves. Dropping off
Leaves. Color - Yellow
Plant. Stem - Red or purple
5y ago
4
3
Solved
PapaBaer
Dunkle Stiele krankhaft oder normal?
Hi, Hier nochmal ein Bild von der Dame mit dem Topping.. es müsste von der Sorte her Critical sein. Sind die dunklen Verfärbungen an den Blättern normal?....
Week 3
Plant. Stem - Red or purple
6y ago
1
Solved
Hvk1907
Gübre yardim lütfen
Arkadaşlar kızlarımı hidro sisteme alacağım gübre vermeye başlamam gerekir mı??
Plant. Stem - Red or purple
5y ago
2
2
Solved
HappySkunk
Purple stem
I read that purple stems can be due to many things... but I’m not sure what this could be - is it a nutrient issue? pH? “Tan”? Genetics?
Week 8
Plant. Stem - Red or purple
5y 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
daveHH
Stammfarbe rot
Der Stamm bei meinen Royal Runtz färbt sich stark rot, ist das normal? Was sollte ich tun?
Week 6
Plant. Stem - Red or purple
4y ago
4
4
Solved
Eddjack
Deficiency?
Non riesco a capire se è una carenza o una bruciatura da luce, secondo voi? Cosa potrebbe essere ? Appare soprattutto sulle foglie a ventaglio....
Leaves. Edges burnt
Leaves. Color - Dark-brown
Plant. Stem - Red or purple
5y ago
2
2
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.
Week 14
Plant. Stem - Red or purple
Techniques. Other
5y ago
1
1
Solved
guggapeter
Help needed - harvest time?
Hi, I'm now in week 12 and I feel that after the flush my 2 vertigo stopped developing. They also have a lot of leaves with some mag issues. Not all the pistols are amber (70%). Also, the trichomes are not all cloudy. I'm not sure but I think I don't see changes anymore.
Buds. Not fattening
Plant. Stem - Red or purple
Feeding. Deficiences
6y ago
2
2
Solved
PoshGrow
Droopy, purple discolloration, plastic like top leaves.
Hey guys! Got problem with few girls. One is very droopy, 2 other have purple discolloration and big fan leaves and 1 is way taller then it should be. Also top leaves look like plastic and abit curled down. pH pen fault? Over wattering? Too cold?
Week 3
Leaves. Curl down
Plant. Too tall
Plant. Stem - Red or purple
5y ago
6
5
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
zawcaz
New red tint on top of branches caused by night of low humidity or other stress?
This morning I noticed some branches on my young plants had turned reddish on top. Last night the humidifier ran out of water and RH dropped to 40% overnight. Could this just be a stress reaction to that low RH, or sign of a deeper issue?
Week 3
Plant. Stem - Red or purple
3y ago
5
3
Solved
Mattuston
Purple Stems
Hi, Phenos like Sideral do not normally tend to color at the end of flowering (unlike Wedding Cake). However, the stems are already quite purple! I know low temperatures cause stress causing staining, but that much ? UV's and IR's of led light? An excess of something? Thx a Lot �
Week 12
Plant. Stem - Red or purple
5y ago
1
1
Solved
cropduster
Problems in second week of flower, any ideas? Yellowing with some brown spots and purple stems.
First signs of issues? Medium - Pro mix hp Nutrients Gaia Green (75/25 mix of 444 and 284 in base) Top dressed week 4 with 3 tbs of 284 and 3 tbs worm castings two teas - first veg tea second bloom tea 3/4 to 1L every two days of well water ph 6.5 ppm 213 Purple stems from stalk
Week 6
Leaves. Curl up
Leaves. Color - Yellow
Plant. Stem - Red or purple
5y ago
2
3
Solved
BucketHathead
Nodes are purple, what does this mean, is it repairable, should they be trimmed?
Curious more than anything.. last week before I destroyed my little plants life that the nodes were bright green. Now they’re this purple, blackish ded looking color. My questions, what does this mean, is it repairable, should they be trimmed? Thank you wonderful experienced ppl!
Week 5
Plant. Stem - Red or purple
3y ago
1
1
Solved
Dormando
Fan Leaf tips and light spotting
Been feeding ferts regularly every third day watering. Using BioThrive Grow, Bloom & CalMag. Seeing some leaf tips burning and light yellowish spots. Overall the plant looks healthy, there are only 5-6 leaves showing these signs. What is wrong with my G ?
Week 12
Leaves. Edges burnt
Leaves. Color - Yellow
Plant. Stem - Red or purple
2y ago
4
8
Solved
forgettenseedling
Hängende Blätter, Gelbe Spitzen, lila Stil
Hängende Blätter obwohl ich sie erst gegossen habe. Weiß jemand woran es liegen könnte. Auch das die neuen blätter teilweise gelb gefärbt sind ab den spitzen ist ein problem auf das ich keine lösung habe, kann mir jemand weiter helfen? Teilweise ist der stiel auch lila gefärbt.
Week 6
Leaves. Curl down
Plant. Stem - Red or purple
4y ago
2
3
Solved
Nick_Frampton
Soil PH needs to be increased. What do I do?
Hey everyone. I've noticed my plants are getting purple stems and not really growing as much as other plants. I checked the soil PH of them and the big plants have a PH of 6.1 and the small ones have a PH of 5.7. What's the best and easiest way to increase my soil PH to 6.5? Ty
Other. General questions
Plant. Stem - Red or purple
Feeding. Deficiences
4y ago
2
8
Solved
Killabarbie
Deficiency or genetic?
Hey growmies, I need your help again 🙂 the French Macaron have purple stems since three days and no other signs of deficiency or burn. I know that this strain getting really dark an purple, but so early? Night Temps are between 18-20°. Thanks and stay safe
Week 7
Plant. Stem - Red or purple
6y ago
9
5
Solved
GreenBean
leaves seem a bit dark green have cut down nitrogen and theres a good amount of phosphorus and new growth is pretty purple and stems are very purple im pretty sure its something to do with feeding, are plants still missing something? or should i just leave them and see what comes
Week 16
Leaves. Color - Dark-purple
Plant. Stem - Red or purple
6y ago
1
1