The Grow Awards 2026 🏆 
First true leaves turn yellow
Similar Grow Questions
Solved
BearBeard
Could this be light burn?Could this be light burn? Only on top new leafs. Have not fed her any nutes yet. I did lower the light after I did LST by the height difference after bending her lower. Have raised the light back up again but just wanted to check what people thought. Thanks in advanceWeek 4
Leaves. Color - Yellow
6y ago
3
3
Solved
Newbie87
Leaves turning yellowLeaves turning yellow 3 days into week 8.
Not due a feed for a few days but somethings deficientWeek 7
Leaves. Color - Yellow
3y ago
1
4
Solved
EARL_GRASS
Magnesium deficienty or azoto deficienty???Is deficienty azoto or magnesium ???Leaves. Color - Yellow
5y ago
1
1
Solved
BudBrewerz
Yellow leafSooooooo.... Was away from home for a week... Trusted the dripper ... Think she was drowning and having too much of something... Too the dripper away and flushed for a couple of days...She started looking better againWhere do I go from here ...All tips welcomeWeek 6
Leaves. Color - Yellow
3y ago
5
5
Solved
Untiedmymind
Leaves turning yellowLeaves yellowing need a little help.Week 14
Leaves. Color - Yellow
5y ago
2
1
Solved
IsseyBukkake
Leaf problem slowly spreading on 1/8 plants.I recently found 1 leaf extremely damaged on 1/8 plants in my tent.
I have now noticed the problem spreading slowly.
Could anybody tell me what this is?
I have included pics,
1st pic is the leaf i found 3 days ago
2nd pic is of the leaf i broke off today
Thank you!5y ago
1
1
Solved
NanoLeaf
Light BleachingLight Bleaching?
I would just like to know if some of you groupies out there can have a look at the photos above - Notice the top-sites' small sugar leaves are slightly lime green and I just want to know if it could be light bleaching before its gets too serious.
Or what else..5y ago
1
1
Solved
SilverSlapdick
Nitrogen toxicity mid-flowerSo I overfed during veg and now my plant has nitrogen toxicity. Besides making leaves super dark, crunchy, and yellow it has also made my buds pistils curl and brown way too early. I’ve been flushing often with water. Is she a lost cause or should I ride it out for 4 more weeks?4y ago
4
4
Solved
densesensi
Yellow leaves?My bottom leaves are turning yellow - Is this heat/light burn? Or maybe a nitrogen deficiency?Week 3
Leaves. Color - Yellow
6y ago
1
Solved
PortkeyCannabis
Low cal mag?Is this low cal mag? Or just recovery from the nute burn? It looks like new growth?Week 6
Leaves. Color - Yellow
4y ago
4
3
Solved
known2funk
We've had some really warm weather the past few days. This morning, just before the lights switched off, i saw it was 31.1 degrees C in the grow tent. Are the yellowing leaves a concern? The yellowest leaves are really brittle. I don't believe they're under-waterd.Week 13
Leaves. Color - Yellow
3y ago
2
2
Solved
donnythechef
Is this light burn?Is this light burn? If not what is it?
It's under a Phillips 13w household led 2700k bulb, it's not the only affected area but it's the most affected and the closest to the bulb.
I plan to add more but don't want the issue to accelerate.
Thanks in advance!6y ago
1
1
Solved
DBQush
Potential causes and fixes for magnesium deficiencyMy runoff EC and PH are normal and I am adding calmag to every feeding so not sure why I might have magnesium deficiencies.
Aside from giving them just a calmag feeding and foliars, any tips on what I can do and why this is even happening?Leaves. Color - Yellow
Feeding. Deficiences
Techniques. Main-lining
3y ago
4
Solved
Brocolilla
my girls showed little nute burn so I watered them with enzymes and molasses and after that I take nutrients dosage half. But girls starts yellowing. So I dont know if its def or end of the flowering because strain have 55 days trich looks half cloudy. is it good idea start flush😳Week 13
Leaves. Color - Yellow
7y ago
2
2
Solved
Grazynka
Fabric pot changes PH?!Water solution ph5+1000ppm, run off7, 🤦♀️😳PPM @2400, flushed ph6 runoff6, ppm 998, next watering ph5,5+1000ppm but runoff8😳🤦♀️ppm1489. Tested soil Ph5 then tested pot(don't ask) PH14🤯 how 2handle the PH? She is getting yellow ☹️stupid fabric pot😤 potassium defi? To low PH?3y ago
2
3
Solved
Weedmatze
Mangel, zuviel Dünger oder normaler ProzessMeine Pflanzen sind jetzt tag 44.
1 xThink different gelbe Blattspitzen, Maßnahme ich dünge nicht mehr seit 6 Tagen. Nur ph 6,0 Wasser calmag biobizz.
Die Red poison gelbe Blätter bzw. Das grün geht raus und die grossen Fächerblätter werden langsam gelb.
Mangel?? Zuviel Nahrung?Leaves. Color - Yellow
2y ago
3
3
