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
yellow leaf, brown spots deficiency
jeffrey420
started grow question 3y ago
Can you guys help me identify this deficiency??
Solved
Week 9
Leaves. Veins - yellow between
Leaves. Color - Yellow
Leaves. Color - Pale
likes
Beans416
answered grow question 3y ago
Hey it looks like nitrogen deficiency. Buds are taking nitrogen from the leaves and not the soil. Hope this helps happy growing.
likes
Complain
Selected By The Grower
jeffrey420
answered grow question 3y ago
Could it mag deficiency?
1 like
Complain
StaresAtPlants
answered grow question 3y ago
Another thing to look at is where/what. Where/What leaves are affected. Old/bottom or new/top. My guess is N, P, and K, unless you have re potted recently.
1 like
Complain
ernest_twwg
answered grow question 3y ago
https://dutch-passion.com/en/blog/a-visual-guide-to-cannabis-deficiencies-n987
1 like
Complain
Similar Grow Questions
Solved
FIRSTGROW2021
Strawberry pie sad
Hi guys so I've got my 1st unhappy girl this one I've is strawberry pie fast buds I have looked and it says ph should always be at6.2 and I usually aim for about 6 and has always been fine or have I gave this one to many nutes my other girls are fine what can I do to save her?
Leaves. Color - Yellow
5y ago
1
4
Solved
Ixnay
Yellow leaves with dark spots
Old leaves going yellow with black spots that fall off with the slightest touch.. They are the lower growth that hasnt really been exposed to much light. Any ideas what could this be and how to fix it? A bit worried about losing 3 months work 😑 Thanks in advance!
Leaves. Color - Yellow
5y ago
1
2
Solved
SmokeyMcPotty
Yellow leaves,
I am feeding these plants all the same nutrients. Canna aqua vega and a 1ml/l calmag with a ph of 6.2 So I was wondering why this is happening. The RH is about 50-60 and temp 28°C. Thanks fellow growers
Leaves. Color - Yellow
3y ago
3
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
ReggaeShark_420
How to fix Overwatered or under watered?
Can someone help me with a solution to fix the Dark Devil auto. Think i have over watered him a bit. Thanks 🤞🏻
Week 3
Leaves. Color - Yellow
Plant. Wilting
5y ago
2
3
Solved
BobRoss
Leave problems
Lowest leaves are turning slowly yellow, ph is 6.5.
Week 13
Leaves. Color - Yellow
3y ago
4
8
Solved
EARL_GRASS
Leaf problem help me :(
i can't understand why some leaves become autoflowering this way, ph 6.5 i use the fert di biocanna day tempersture 29 night temperature 22 18h photoperiod then they turn completely yellow until they come off on their own, the rest of the plant is completely only some leaves do
Leaves. Color - Yellow
5y ago
1
2
Solved
Bizio
Pruning dilemma
I am noticing that some leaves are turning yellow at the very bottom of some plants, I think that there is not enough light coming through. So my question is (I did only LST and FIM --> on the main branch on every plant) should I start to prune some branches to empower top part?
Week 6
Leaves. Color - Yellow
Techniques. Defoliation
6y ago
4
4
Solved
PepInMyStep
My plant is looking yellow. HELP!!!! thanks
my plant is yellow, I am now on day 14 or 15 of the growth and I am giving it 0.6mS of advanced nutrients grow and occasionally some K2O. Does anyone know why this might be happening or if I should even be worried? Thanks :) (more detail in my diary)
Week 1
Leaves. Color - Yellow
4y ago
4
3
Solved
Marley03
Rust spots
What could be the cause of these rust spots? Only 1 plant is showing this. Same strain. They get same feeding. Ph is ok. 4 weeks into flowering.
Leaves. Color - Yellow
Leaves. Other
4y ago
1
Solved
GhettoSetUp
Yellow leaves from bottom upwards
I have yellowing leaves from the bottom up. It resembles either N deficiency, MG deficiency or both. Growing in soil. PH is between 6.5-6.8. Feeding 1ml/L fish mix and 3ml/L bio-bloom every other watering. I tried adding cal-mag with N at 1ml/L and if anything it's got worse.
Week 9
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
3
1
Solved
Ryheem420
spotty yellowing of veins on leaves. started at the top worked its way down. stunted growth. both plants have had the same soil, water, nutes even fed from the same bottle. ones doing great the other NOT. I always check ph and recalibrated my PH meter i target 6.3-6.5
Week 3
Leaves. Color - Yellow
3y ago
2
1
Solved
diabloelnino
Is this nute burn ?
Is this nute burn? I just fed her yesterday for the last time since next week is flush week and so on.
Week 9
Leaves. Color - Yellow
4y ago
1
Solved
pawwonee
Think is iron deficy help me
Hello i have a problem with theese plants someone can help me ?
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
2
Solved
Khmma46511
Now what? Help me please!
WTF! what now? Got neem oil sprayed it on my leaves to get rid of the annoying spider mites, now this... leaves yellowing, slight brown tips, curling. I have an idea but not 100% sure n how do i fix it. Is it a few different things or just one? I'm getting irritated. Week 11
Week 10
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Yellow
5y ago
4
Solved
Elgar
Leaf yellowing, brown spots
Hello guys, I have a leaf problem. There are purple stems, discolouring - yellowing and brown spots. I have added a lot of calmag and biogrow (Nitrogen) but the problem is worsening. I need your advice. Thanks
Week 9
Leaves. Color - Yellow
5y ago
3
1
Solved
danielvt32
One of my plants is growing slower than others and showing yellow tones in it's leaves.
One of my plants is definetly behind the others in terms of growth, and it is showing yellowish tones that start in from the center - What is happening to this specific plant, is it some nutrient deficiency? How do I help my plant?
Week 2
Leaves. Color - Yellow
4y ago
2
1
Solved
NovaHova
Quickly yellowing after possible over watering
That escalated quickly, within 24 hours we have lots of yellowing in lower center leaves on 1 Tastebudz and 1 Ethos: Adding cal mag to next watering. Would cal mag be better or Epsom salt at this point? Would a bloom tea help?
Week 5
Leaves. Color - Yellow
Setup. Strain - Autoflowering
3y ago
3
Solved
Smoker666
Leaves Turning Yellow - RQS Watermelon Auto
Hi GrowCommunity! I am currently growing a RQS Watermelon Auto. The plant is in week six and started flowering two weeks back. I did some LST which the plant handled quite well. I am seeing leaves turning yellow starting from the inside. Is it missing nitrogen? Thx in advance..
Leaves. Color - Yellow
2y ago
1
1
Solved
Amandus
Wilting and yellowing leaves after vinegar water solution
I sprayed a mixture of 1/4 spirit vinegar + 3/4 water under the leaves to get rid of aphids (which may or may not have been the problem) earlier today. Now checking on her, I see yellowing of several leaves and wilting of others, which has me worried... normal, or a problem? 😳
Week 5
Leaves. Curl down
Leaves. Color - Yellow
Other. Bugs
3y ago
8
11