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
Strange yellow spots
blackcald
started grow question 6y ago
Strange yellow spots on top leaves, what am I doing wrong?
Solved
Week 3
Leaves. Color - Yellow
likes
TimTheTerpMan
answered grow question 6y ago
According to your log your pH is a bit high.. this can cause a lockout of iron which it looks like what its doing.. shoot between 6.0 and 6.5 if possible! Cheers and happy growing!
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
zecoblk
Upper leaves turning yellow - Day 28 of flowering - Cinderella Jack Auto
Only "half" of the plant is doing that. I don't think its a pH problem, the other plants are receiving the same source/quantity of water/nutes. My guess is the buds that are receiving more light are "maturing" quickly and the plant is sucking the leaves close to them. Thoughts?
Leaves. Color - Yellow
5y ago
2
2
Solved
HaveFun_br
Yellow leaves in early flowering. [First grow]
Hey guys, First grow question: Is my plant looking good? Does she seems healthy? Is she ok for her age? She has some yellow leaves. Is It normal? There is anything I should do about It? Thanks!
Week 6
Leaves. Color - Yellow
4y ago
1
1
Solved
JustChillTHC
Nuteburn or Deficiency?
I use organic Biobizz bottled Nutrients. Can someone tell me if this is a nuteburn or something completely different?
Week 3
Leaves. Tips - Burnt
Leaves. Color - Yellow
6y ago
3
1
Solved
Elemental
Yellow Leaves
What could it be? Those yellow leaves... Overlight? Overfert? Is alredy time to think on LST?
Week 3
Leaves. Color - Yellow
4y ago
3
3
Solved
rak33m
Unknown Deficiency GG#4 Auto (week 10)
Hi folks, my GG#4 Auto has this strange coloring on some leafes in week 10. Can’t find a deficiency that fits this pattern. Any ideas? Best regards 💪
Leaves. Color - Yellow
2y ago
2
2
Solved
TheeLemon
My baby has curled up and shrunk
Small disaster. I woke up this morning to check on my babies and discovered one of them has curled up leafs and theyre slightly yellow. I dont know what the issue is, but ive raised the light and given her plenty of water as an emergancy. She was strong yesterday
Week 1
Leaves. Curl up
Leaves. Color - Yellow
4y ago
1
2
Solved
TheeLemon
Yellow leaves
Around 60% of my lady has turned yellow. I'm almost certain it's not due to watering, and I've only given 1 half dose of nutes in the last week. Any ideas? Repost cus forgot to attach to diary
Week 8
Leaves. Color - Yellow
4y ago
4
2
Solved
kivocsa999
yellow leaves on 3rd week
ls 25 fast buds , have been feeding every other watering with canna terra vega 2m for 500ml of water with 2ml canna rizhitonic,i have seen the yellowing and thought it is calcium issue so i added a half ml of cal mag extra , ph is balanced on 6.2 , but the yellowing is worse
Leaves. Tips - Burnt
Leaves. Color - Yellow
2y ago
1
2
Solved
blady1989sqn
What's crackin the leaf?
Hello, any idea what's going on?? Overwatering?
Leaves. Color - Yellow
5y ago
1
Solved
laxx
Yellowing and lightening of leaves
My back-left plant started to slightly yellow on me from the bottom up. Front-left is also lighter than the rest. Is this a feeding issue? Do they need more nitrogen or did I overwater them? Appreciate your answers :)
Week 12
Leaves. Color - Yellow
1y ago
2
1
Solved
Finch
Color of leaves
How does she look? I think I see some spotting but idk could be paranoid
Leaves. Color - Yellow
6y ago
7
3
Solved
Nina00
Welche Mängel hat meine Pflanze ?
Ich bin mir nicht sicher was genau meiner Pflanze fehlt.. Sie ist jetzt ca 4 Wochen alt. Auto Candy Bubatz XL Ich benutze Brennnesseljauche, Fledermausguano & Bittersalz Würde mich über eine Antwort freuen LG
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Yellow
2y ago
3
Solved
exclusiveX420
A few bleached top fan leaves
Can someone help me determine a cause of the bleached leaves? Lights have been safely set. Water temps under 75, conditions 55 humid and 75 degrees. GH Flora series+ supplements. Dwc hydro pots. New to hydro. Never had this really with a soil grow. Thanks for any input.
Leaves. Color - Yellow
5y ago
2
Solved
ToRuL88
Consejo número plantas y deficiencias
Tengo 27 esquejes en 1,5x1,5 y 650w de led. ¿ me aconsejáis dejar alguno menos y hacer selección? Había pensado dejarlos crecer unas 3 semanas maximo, que no superen los 40cm y hacerles el lollillopping Sabéis por el color y las manchas que deficiencia pueden tener ? Thanks
Week 1
Leaves. Color - Yellow
3y ago
1
1
Solved
Freebyrd
Leaf tips yellowing. Overwatering? Or nute burn?
I recently flushed my soil with water that was PH 7 (my soil was a bit too acidic). My question is: are the yellow tips and browning due to the overwatering from the flush? As well as stripping the soil of its calcium? Thinking of giving them 3-4 days before watering with calmag
Leaves. Color - Yellow
3y ago
1
1
Solved
towellie
Tips turning into yellow
We started feeding the plants 10 days ago. Some leave tips started to turn yellow, we think is due nutrient burn. We decided to water them without ferts for once, to flush out the excess nutrients. Is it a good approach? Could it be from light stress? (See pic for reference)
Week 3
Leaves. Tips - Burnt
Leaves. Color - Yellow
4y ago
2
2
Solved
Ash4009
What’s causing this plant’s leaves to look like this?
Too much manipulation or nutrient deficiency? Currently in FF Coco/Natures Supersoil pH with vinegar/baking soda 6.0-6.4 Transplanted 4/29...LST/Topped 5/2 In 4x2 under 2 600W LED Lights
Leaves. Curl up
Leaves. Wilting
Leaves. Color - Yellow
5y ago
2
2
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
Cr8grow
N or Mag deficiency or other? Leaf tips browning, curling up. Pics added to my diary week 10 Day 1 week 11, start week 5 flower Soil Roots Organics 707; amended perlite, worm casings, silica Temp 64 - 81 RH 40 - 35 Water PH 6.5 Nutrients - Superthrive, Budswel, Biocanna Flores
Week 1
Leaves. Color - Yellow
6y ago
15
7
Solved
ElBarto66
Flecken auf älteren Blättern
Seit letzter Woche, gelb braune Flecken auf älteren Blättern. Was kann das sein?
Week 6
Leaves. Color - Yellow
1y ago
14
6