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Back to Grow Questions
Oldest leaves turning yellow
Waveform
started grow question 2y ago
What could be the cause of oldest leaves turning spotty yellow on 3 week old plants? They got nutritients end of last week for the first time, but not that much.
Solved
Leaves. Color - Yellow
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Krisis
answered grow question 2y ago
Looks like there’s yellowing in between the veins of the leaf to me. That or the lights making it look that way. Anyhow that’d be magnesium deficien
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Selected By The Grower
jeeje
answered grow question 2y ago
I cant see the whole plant, but from the picture it looks like nitrogen deficiency.
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Similar Grow Questions
Solved
Reedius
Northern lights with yellowing leaves
Hey Guys, my NL is starting to have some issues. I started off with the leaves just laying low, i've eliminated lack and excess water, and it's not temperature related. I did a small flush 3 days ago and things got worse. What do you guys think?
Week 7
Leaves. Color - Yellow
6y ago
3
5
Solved
Cannabis_carlitos
Leaves fading to yellow
I just changed the light cycle to 12/12 - My leaves are fading to yellow, at first just new growth but I see it on the older fan leaves as well. I did give them a flush and only ph balanced water for a week and a half. Also, just gave nutrients(50% strength ) 5 days ago
Week 14
Leaves. Color - Yellow
3y ago
1
3
Solved
Mekster
Yellow leaves at bottom. New growth good. How she looking?
Tried a new nutrient line, instant Pythian(sp?). Switched back now and she seems better. Should I be concerned at this point? New growth looks good to me. Although she seems droopy for this time of day. My theory is that the new line was more sensitive to warmer water temps.
Week 2
Leaves. Color - Yellow
3y ago
1
2
Solved
DrBinoc
Magnesium or Nutrient Burn or?
Magnesium deficiency, or nutrient burn or??? Only on the lower leaves so far, curling down was existing genetics - but the burnt tips are new and some have even curled up now. Probably 5+ weeks left so too early for natural dying off?
Leaves. Tips - Burnt
Leaves. Color - Yellow
6y ago
5
4
Solved
the_canna_scientist
Fast-growers starting to show issues.
Got some issues on these fast growers. I've been treating it as a cal-mag deficiency, however I've been feeding calmag for two weeks and its only getting worse it seems. Any thoughts? PH is 6.0-6.3, PPM 444 feed, RH 47-50%, Temp 77-81f.
Week 5
Leaves. Dropping off
Leaves. Color - Yellow
Leaves. Color - Mottling
5y ago
3
2
Solved
DrastikOG
Deficiency, Mutation or Genetics?
Does anybody as an idea to tell me whats going on here with my Norther Lights Auto from 00Seeds? I am feeding her 200 ppm water filter through Brita filter Nutrition per Gallon of water -2ml CalMag -1ml FloraMicro GHE -1ml FloraGro Ghe -0.5ml FloraBloom -Overal PPM 400-500
Week 2
Leaves. Color - Yellow
5y ago
2
4
Solved
4EverGreen
Losing vigor and yellowing
Sorry I don’t have a diary for this grow. I did collect some runoff on one of my girls so hopefully this can help for giving assistance. This is only my 3rd grow and the first 2 went very well but this one isn’t, all plants have lost vigor, are growing slowly and are yellowing.
Leaves. Color - Yellow
1y ago
5
5
Solved
Kaixa6990
I have some problems the girls start be yellow and i dont know why if some body can give a little help i apreciate. Enjoy
Week 2
Leaves. Color - Yellow
6y ago
1
1
Solved
Sitej
turn yellow top leaf tips
please tell me what it could be, jack herer fast buds, fertilized on day 19 1/4 of the dosage, already managed to pour clean water on day 22, ph is fine, mars hydro ts 600 lamp distance is 35 cm now she is 23 days old
Leaves. Color - Yellow
3y ago
2
5
Solved
Wejder
Yelow leaf a deformed top
Hi guays, Northern Lights - today i defoliated her. I found a yellow leaf on the bottom of her and main cola looks dry and deformed. I posted photo. Do you have some idea what's wrong. The rest of the plants looks healthy. The more photo it's in my diary (Wejder) Thank you:)
Leaves. Color - Yellow
5y ago
3
3
Solved
Misanthrope
Single Discoloured Leaf
What is she trying to tell me with the discolouration pattern on this single leaf?
Week 12
Leaves. Color - Yellow
4y ago
4
Solved
TerraDonc
Leaf discolouration. Nutrient deficiency?
Leaves are discoloured and clawed. Started about a week ago with yellowing of tips and clawing at top of the plants. Now lots of leaves are slowly changing colour. Thought it was nitrogen toxicity but my runoff is 330ppm. Are they deficient in nutrients?
Week 4
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Yellow
5y ago
1
2
Solved
HighRoller909
what is the problem?
After I started to give her bloom fertilizers,it stopped spreading.yellowing from edges to center.
Week 13
Leaves. Color - Yellow
6y ago
3
4
Solved
TheRocker
Leaves changing color on tip and edge
The leaves on Red Barchetta are changing color. Refer to pic #2. Is this due to light or nutrients?
Week 5
Leaves. Color - Yellow
4y ago
1
Solved
Osito
Is it time to flush or wait a week?
Hey what’s up grow gang, we’re approaching the final weeks of flowers, but I was curious as to if our grow is ready to be flushed, or if they possibly need another week of nutrients, and also the best flush technique for best results. Thank you for answering in advance!
Week 19
Leaves. Tips - Burnt
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
4
4
Solved
Lumberdog
Yellow tips?
First timer here. What might be causing the small, yellow tips? The leaves sometimes look slightly pale but damn if they don’t look super healthy overall! I’m using minimal nutes thus far. Any insight? Thank you, thank you.
Leaves. Color - Yellow
5y ago
1
1
Solved
Carbourie
Yellowing leaves and strange spots
Any idea what could be going wrong with these Northern lights Auto (RQS) plants in 2nd week flowering? The leaves are now yellowing and there's some strange spots appearing especially on one of the plants. Using Bio Bizz - All Mix soil / 1ML Grow and 1ML Bloom for 2 weeks.
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
1
2
Solved
SugarBoogers
Weird burn spots
Any clue on what this is and is there any way to fix/prevent this in the future?
Leaves. Color - Yellow
4y ago
3
3
Solved
WeedBerry
Hi growers I’ve been struggling with an issue, For some reason my plant looks unhealthy could anyone give any thoughts? Thank You
I’ve been feeding biobizz which includes all the nutrients I’m still clueless to why my new growth leaves are getting yellow. I flushed it last week and got the runoff back to 6.3 - 6.5 ph but I don’t know how to use the ppm pen any help how do I measure the runoff thanks?
Leaves. Color - Yellow
5y ago
1
1
Solved
AADGrow
Spots and leaves bending down, why ??
I notice some spots on the plant, can someone advise in what the problem is and how to resolve ?
Week 4
Leaves. Curl down
Leaves. Color - Yellow
4y ago
5
3