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
Leaf discoloration
Notagrower11
started grow question 5y ago
Hello growers, 4th-5th week of flowering, what is the deficiency here? Thanks.
Open
Leaves. Color - Yellow
likes
Answer
Roberts
answered grow question 5y ago
Well with no other info looks like nitrogen and or sulfur. Possible just lack of light.
likes
Complain
Similar Grow Questions
Solved
Wiillaaee
Week 11, yellow leaves, low ppm
Why does my plant look like this? I used sledgehammer 8 days ago. 4 days ago 6l ro w/ full does ff nutes. Using hf soil. Today 6l ro water ph 6.7. Run off ph 6.6 ppm 551.
Leaves. Tips - Die
Leaves. Color - Yellow
1y ago
1
Solved
Soulgrow_x
Deficiencies
Can somebody tell me what this is ? I’m lost my only guess would be over watering
Leaves. Tips - Burnt
Leaves. Color - Yellow
3y ago
2
2
Solved
rakasha681
Can I fix this? Kinda looks bad.
I think effed up... Not exactly sure how or how bad it is. I haven't fed in a bit and looked like a nitrogen def starting, so I fed half strength, and 48hrs later I have this. Can I fix it? I did fish water this morning. Calcium def?
Week 6
Leaves. Color - Yellow
3y ago
3
5
Solved
CaptainGary
Is it this or that?
My best guess is Overfeeding.. I sat down to try nut it out, but I only guess. What is the deal here folks?
Week 11
Leaves. Color - Yellow
5y ago
3
2
Solved
Weedovaurus
Lower leaves yellowing and curling down
Do anyone know what's wrong ? I was thinking they were getting to much light in the tent with my flowering autos... I'm quite sure it's not about watering
Leaves. Curl down
Leaves. Color - Yellow
Leaves. Color - Pale
5y ago
3
8
Solved
PoleKat
One leaf yellow spots
Hi guys, just came across this leaf today one of the lowest ones on one of my plants. None of the other plants seem to be affect nor any of the other leaves on this plan. Can’t seem to find it on list of deficiencies as it presents different. Any thoughts? Thanks guys!
Week 7
Leaves. Color - Yellow
6y ago
4
Solved
GBaalr
Leaves down
Hello,fellow growers. My Royal cheese 🧀 seems to be doing not so well in her second week. Leaves are turning yellow and down. Can this be because of overwatering ? I gave her two litters of water two days earlier and now it's all sad. Please help me out.
Leaves. Curl down
Leaves. Color - Yellow
4y ago
1
2
Solved
Germano
Droppy Yellow Leaves in Flowering
Hey Growers,so in only 1 Day the lower Leaves got Yellow and Droppy ( you can see the last 3 pictures i added) Nut: BioBizz (Grow 2,Bloom 3,Max 1)ml Temp:( 19-23) Humidity: 39-46 i add one fan to the grow box, it is blowing wind in the stem area ( to get lower humidity) Thx :D
Week 8
Leaves. Dropping off
Leaves. Color - Yellow
6y ago
1
5
Solved
Casualguy
Yellow spots
I’m showing more of this discoloration on 2 more leads from a couple weeks ago
Week 6
Leaves. Color - Yellow
4y ago
1
3
Solved
Creenpie
Yellow brown spotted Leaves
Hi. The first Sweet ZZ auto. Second NL auto. PH water before watering 7.0. Whats wrong with these both? Thx.
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color - Yellow
4y ago
1
1
Solved
Architect
WTF IS THIS
hello guys, is this deficiency? 50% coco 50% light mix because I thought that with 100% light mix I had toxicity, I did not add extra nutrients , humidity 35% something I will fix, also who knows why the package light mix biobiz says 1.2 ec while in the runoff EC Meter says 2.5
Leaves. Edges burnt
Leaves. Tips - Die
Leaves. Color - Yellow
5y ago
3
4
Solved
Samurai0627
Stop growing by giving too much water
Should I throw it away? Growth stopped due to too much water. It doesn't smell.
Buds. Other
Leaves. Color - Yellow
3y ago
1
Solved
EaRtH
Should I harvest in 2-3 weeks ?
Hey, do you think my plants might be ready in two weeks ? They're autos in 7th week of their life. I know that 9 weeks is ok for most, but these should take approx. 11 weeks. Do you think one more week of feeding, then flush would be appropriate ? Trichomes are mostly milky white
Buds. Other
Leaves. Color - Yellow
Other. Other
2y ago
1
3
Solved
Frosty_Buds
Help: potential over fertilisation or over waterning
I used Biobizz bio grow, 2ml/L and sprayed them more than usual. The tip of the leaves is getting yellow. 2 plants have the leaves pointing down and seem more textured and tick. The other 2 (the biggest) seem better, but the yellowing of the leaves is more evident. Check the diar
Leaves. Curl up
Leaves. Color - Yellow
Feeding. Other
2y ago
7
2
Solved
Overgrotho
Yellow growth to be cut off?
Should I continue to cut off yellow growth as it appears?
Week 4
Leaves. Color - Yellow
5y ago
1
Solved
sweetkaya
Calcium Deficiency?
Some days ago i noticed what i think is a Calcium deficiency because i cut the CalMagXtra on day 14 when i started giving the base nutes. So I re-added it in the mix and adjusting the pH at6.0 but the plant is not recovering andnow even the 2°plant is showing that signs. Help pls
Week 3
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Mottling
5y ago
2
Solved
TinyTenter
Yellow Burned Bud Leaves. Purple Calyxes. Red Stigmas. Stunted?
As u go from top of canopy to bottom, the leaves get darker green and less burn. Lamp is at top of 3ft tent, 10 inch above canopy. Feed is at 1.3EC/6.1ph. Runoff EC climbs, then I FloraKleen flush about once a week. So is it just light burn? What you see? Is she stunted? Thx.
Buds. Other
Leaves. Edges burnt
Leaves. Color - Yellow
4y ago
5
6
Solved
MRHERB
Nutrient deficiency? Leaves looking yellow at bottom of plant with strange dry tips and stuff
Leaves looking yellow with dry tips doesn't look like magnesium and not sure if its nitrogen deficiency hope someone can help
Leaves. Tips - Die
Leaves. Color - Yellow
Plant. Other
5y ago
2
Solved
Mokorelsare1
Deficiency or toxicity?
Hello i'm not sure what's going on, is this toxicity or deficiency? She loojs happy overall but new leaves have weird color, curled down tips, some of em are yellow and some are brow - burned.. maybe it's because she's transforming into bloom phase, PH 6.2 but runoff is PH 7.1.
Week 4
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Yellow
2y ago
5
2
Solved
flodaddio
Yellow Seedling with spots
Yellow leaves with spots on my seedling, checked for bugs, none present on the plant, lots of rain and hot sun lately, maybe overwatered?
Leaves. Color - Yellow
Setup. Seedling
Setup. Outdoor
6y ago
2
2