Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Nutrient Burn?
Toking12am
started grow question 5y ago
The Durban Poison is showing some color change in its lower leaves. Im thinking this is a nutrient burn from to much nitrogen. Would that be everyone elses conclusion?
Solved
Week 5
Leaves. Color - Yellow
likes
homerjgangia
answered grow question 5y ago
Hi mate ... it's for sure a little deficency of calcium or magnesium!!!! Good luck with your grow mate!💪💪
3 likes
Complain
Selected By The Grower
Toking12am
answered grow question 5y ago
Thank you all for the info. I will try adding some cal mag and update once I see some change.
1 like
Complain
Hashy
answered grow question 5y ago
Looking more like calcium or magnesium then nitrogen.
2 likes
Complain
Hempy_The_Kid
answered grow question 5y ago
Possible start of magnesium deficiency.
2 likes
Complain
Similar Grow Questions
Solved
EirikBloodAxe
Stress or deficiency?
Two leaves around main Cola. Yellowish with rust spots. Had its first day in tent with low humidity. Did some first time defoliation to increase air circulation. Stress or Potassium, Calcium deficiency? Northern lights auto, 8-9 weeks. Canna Coco Nutrients.
Leaves. Color - Yellow
Leaves. Color - Dark-brown
6y ago
1
1
Solved
Mysteriogo
Should I remove parts of leaves ?
I suppose it's a something like overwatering + lamp stress. My lamp is now something like 80cm away. And I hvn't watered for 1 wk (but soil still wet, so... I wait ?). => Should I remove parts of leaves ? What about leaves with center dots? Previous question for more info, Thx
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Feeding. Other
4y ago
1
2
Solved
Eagers
Nitrogen Deficiency?
Think I might have a Nitrogen Deficiency but just wanted to check and confirm with some of you? Leaves are slightly pale and yellow across the plant. I checked runoff Ph last week and it was 6.1 realised it can lockout some calcium so flushed with 6.7. Thanks
Leaves. Color - Yellow
6y ago
1
3
Solved
ElonMuskFanClub420
yellow/dark discolouring of leaves late into flower
Noticed this on about 5 leaves, some more affected than others. The plant is towards the end of the flowering, with about 3 weeks left, better to ignore it now or try to do something ? perhaps leaf Septoria, already increased air flow and decreased humidity
Leaves. Color - Yellow
6y ago
2
2
Solved
kush_dreams
Nute burn or something else?
My middle and top leaves are yellowing from the tip and edge inward, is this the nutrient burn or another issue altogether? Runoff PH was 5.9 and ppm was 700.
Week 13
Leaves. Tips - Burnt
Leaves. Color - Yellow
Feeding. Deficiences
6y ago
3
2
Solved
SmokeBigBuds
Potassium deficiency?
Possible potassium deficiency? I usually get burnt tips but these are starting to yellow down the sides too.
Week 7
Leaves. Tips - Burnt
Leaves. Color - Yellow
4y ago
3
3
Solved
MarkGreenThumb
the Girls had a HOT night.!!!
So two Nights ago, the carbon filter was unplugged and the Room hit a high of 37celcius A day later some of the Leaves turned a little Yellow. anything way I can Help the girls out?
Leaves. Color - Yellow
5y ago
5
Solved
WhackyTobaccy
Help validating what this is
My plant seems to have developed some kind of deficiency/excess. I researched and think that it's CalMag deficiency, added CalMag to my nutes (1ml/l). Just wanted to check in with the experts here to get a second opinion. The growth seems slow I'm afraid I may have stunted her 🤦
Week 2
Leaves. Color - Yellow
6y ago
1
2
Solved
BiteAway
Deficiency, what could it be
Im having some sort of deficiency going on. Soil ph: 6.1 - 6.2 Runoff TDS: 500 Substrate + Nutes: BioBizz I underfed them on purpose to avoid overfeeding. But now i have to correct it somehow ^^ What could this be? Im thinking potassium? I appreciate any help :)
Week 8
Leaves. Color - Yellow
4y ago
1
1
Solved
Jobbie
I'll just leave this here.
Only a few leaves, but should I be worried? Last few waters have only had calmag to see if that helps.
Week 10
Leaves. Color - Yellow
Leaves. Color - Mottling
4y ago
1
1
Solved
JoeGrows420
Yellowing early flower
What deficiency is this?
Leaves. Color - Yellow
3y ago
2
2
Solved
Khanos
Too much light indicator?
After increasing the amount of light, the leaf tips turned yellow. Too much light indicator?
Week 3
Leaves. Edges burnt
Leaves. Color - Yellow
4y ago
7
5
Solved
Seth_101
Foxtailing Yellow Leaves White Trichomes - WHAT HAVEW I DONE?!
Hi! It's my first grow and I thought I was Doing alright. After I've bought a tent, seems like things got worse. My flower is an auto in week 13.4 (supposed to take 9-10weeks) and I'm flushing since about 10 days. Still the trichomes are pretty clear. What should I do?
Leaves. Dropping off
Leaves. Color - Yellow
Setup. Strain - Autoflowering
2y ago
1
1
Solved
AlanTitchmarsh
Spots on 2 leaves. Anything to worry about?
Anything I should be worried about here? May have let the soil go a little to dry before watering this morning. Overall she seems quite lush, just noticed a few spots on 2 leaves
Week 3
Leaves. Color - Yellow
6y ago
2
2
Solved
Clout_god67
Why are the tops yellow?
Yesterday I gave them each 1.5 ml of fox farm grow big and 1ml of big bloom. This is the first day after switching to 12-12 as well
Leaves. Color - Yellow
5y ago
4
4
Solved
jokgga
Nutrient Lockout or Nitrogen deficiency (i.e need more nutes) or Fungus (see stems)
My leaves are yellow but some are turning green. Do they need more nutrients or lockout? I have not gone above 1EC but have seen both strains handling 1.5EC+ in other diaries. All three plants are drinking the water in trays. Res/Tray@ 6.0PH/653PPM. Coco slurry @6PH/500PPM
Week 8
Leaves. Tips - Burnt
Leaves. Color - Yellow
Other. Mold
6y ago
2
4
Solved
Doraemon
Is it a nute toxicity?
Last week i started adding Plagron Green Sensation 1ml/L, i was already giving her 1ml/L of BioBizz BioBloom, water is PH 6.3 Soil is Atami Kilomix I'm planning to add Vertafort Bloom Tablet in the next days, will it be a problem? This is happening only on 2-3 older fan leaves
Leaves. Color - Yellow
6y ago
2
3
Solved
TRS420
Stickstoff Mangel in der 4. Blütewoche ?
Hallo Tag 28 seit Umstellung 3ml/L Biocanna Flores Ph 6.6 Sieht nach Stickstoff Mangel aus, habe 0.5ml/L Biocanna Vega vor 4 Tagen als Stickstoff boost versucht, aber vergeblich.. Könnte mir wer helfen ? Ich mache wegen privaten Gründen kein Tagebuch Ich weiß das es besser wäre
Leaves. Curl down
Leaves. Color - Yellow
7mo ago
3
Solved
visco
What's up with the yellowing leaves? They seem to yellow from the outside inwards and the tips also seem burnt too. Is it nutrient burn? Excess or Deficiency? It's mostly on the bottom but its affecting some of the bigger leaves in the middle too, Watch the video for an overview!
Week 6
Leaves. Color - Yellow
7y ago
1
1
Solved
heythere1234
Leafs turning yellow and brown
Hey guys, so anyone knows whats up with that? Also does my other plant look okay?
Leaves. Edges burnt
Leaves. Color - Yellow
Plant. Other
5y ago
2
2