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
Nitrogen deficiency
Pr3m_85
started grow question 5y ago
Hi all, Can you confirm me a nitrogen deficiency ? Thanks !!! 😌
Solved
Leaves. Color - Yellow
likes
The8thChevron
answered grow question 5y ago
It does look like N deficiency. If you haven't been giving nutes yet, it's time. And if that's coco, don't forget the calmag (unless you're using tap with a naturally high amount of it).
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
Greendawg
Ok.i have my largest plant with yellowish leaves this week. Next week I will remove grow lights before photos. Help with yellowing leaves. I am running a good mixture soil, with manure as a grow. Should I addgrow?
Week 11
Leaves. Color - Yellow
6y ago
4
4
Solved
SunnyDays
Upcoming Trouble?
I have seen some small yellow/Brown spots on the leaves of my stretching Northern Light. Also the leaves are a little lees dark green then before. Is this a beginning defiancy?
Week 6
Leaves. Color - Yellow
6y ago
4
5
Solved
GrowP4Y
What's the problem?
Hi guys, basically for the last few days the problem hasn't varied too much but I can't figure out if it's my light or if it's coming from somewhere else. Some of my leaves are curling with stains either on the leaf or like a burn on the tips.
Leaves. Twisted
Leaves. Color - Yellow
2y ago
6
7
Solved
Horosho
Small yellow stains
Hello colleagues! Would you kindly help me and tell what these yellow stains may be caused by? I think I could set the ph-level too low, so it may be a deficiency of some nutrients, but the plant seems developing normally.
Leaves. Color - Yellow
4y ago
1
3
Solved
Middlelifer
Keep them going or whack them?
These got something going on them i can't figure out. Consensus says? Any way to save them?
Leaves. Color - Yellow
4y ago
1
5
Solved
xoxo230409
Yellow lower leaves
Hello, This is my first grow and now I'm confronted with the first problem. The lower leaves on my plants are turning bright and yellow. A few leaves have very small brown spots. Can someone help me and perhaps have an idea as to how I should proceed? Thanks.
Leaves. Color - Yellow
2y ago
1
1
Solved
Igrowneil
Help with nutes
Anyone recommend me continue with my GHE RIPEN or back to TRI PART and add the nitrogen and micro nutes back in until they finish or just ripen
Week 7
Buds. Other
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
2
Solved
Noob_quest
Root rot?
So after being diagnosed with overwatering a few days ago it has spread to more leaves. I think I have developed root rot. Please confirm? Also best ideas to fix? Have sprayed with rhizo and added some great white to soil. Thanks for the help so far, A worried mother,
Week 4
Leaves. Curl down
Leaves. Color - Yellow
5y ago
2
3
Solved
DFWmd
Should I worry?
A couple days after flipping to 12/12… I see yellow edges to new leaves. Should I worry? Wait a bit and see? The other plant looks fine and they’re both getting same nutes.
Leaves. Color - Yellow
2y ago
3
6
Solved
Pjm70
Yellow lower leaves
Lower leaves are turning yellow. She just started her second week in flower. My first thought is I'm not feeding enough. She is short, but still a lot of plant here. Here upper leaves are a nice shade of green. She prays all day long. Is this a problem.
Leaves. Color - Yellow
3y ago
2
4
Solved
cannonone
Purple branches
Hey, many of my branches have turned purple, and a few leaves yellow.... I'm using bio grow (biobizz) since 5 days, is it calcium or magnesium deficiency? What to do? And can I start with flowering now? Thanks
Leaves. Color - Yellow
5y ago
1
3
Solved
buddhi_coop
Nutrients
Is this a good cocktail for my next feeding? I’m having major nutrient deficiencies or something. These yellow leaves got me stressed.
Leaves. Color - Yellow
Feeding. Deficiences
Feeding. Other
5y ago
4
4
Solved
ClaireCrystal
Yellow dots on leaves
I have these little yellow dots on one of my plants. It looks healthy other than that.
Leaves. Color - Yellow
4y ago
1
2
Solved
aBUDabove
Leaf Diagnosis Needed
I need help. Leaves are turning yellow at top of plant only. And only on American Pie. Not Northern Lights. I am using a Sonlipo SPC2500. Bloom mode. Is it possible to have lower ppfd levels and still get light burn? Thanks in advance.
Week 9
Leaves. Color - Yellow
3y ago
6
3
Solved
Patagoniaweed
Magnesium - Nutrient problem
Do I have Magnesium deficits or any other problem? I started to notice during the last week and it is progressing quickly. The last weeks, pH of drain water was low (between 5,5 and 5,8) but I could increase it until 6.1. Has anyone the same problem? Thanks!
Leaves. Veins - yellow between
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
9
6
Solved
YisusHaze
Sintoma de deficiencia?
Tengo 12 plantas en este cultivo y casi todas ellas tienen este mismo síntoma, alguien me puede ayudar a identificarlo?
Leaves. Color - Yellow
4y ago
4
5
Solved
laberg
Possible toxicity or deficiency?
I saw this on one of my bottom leaves this morning. Hopefully someone can give insight of what it might be. I'm concerned that it is phosphorous deficiency. I didn't notice it a day ago, but I wasn't looking closely. 2 days ago I watered her (540 mL, 1/4 tsp nutrients). Thoughts?
Week 3
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
5
5
Solved
GardeningWithBo
Is this normal new leaf color growth?
It seems again that my leaves are a touch shiny, slightly curled down, and are a touch yellow. I water only 1 Liter every two days and do not use any fertilizer apart from coffee grounds and aquarium water which has slight minerals. Thanks for the help in advance
Week 6
Leaves. Curl down
Leaves. Color - Yellow
6y ago
2
2
Solved
Jason420
Nährstoff Mangel behoben?
Wenn ich einen Kaliummangel habe bei einer Pflanze. Und den dann behebe, bekommen dann manche Gelben Blätter wieder Grüne Farbe?
Leaves. Color - Yellow
5y ago
1
3
Solved
Dean1
Curling leaves and yellowing
Hi I’m having some leaf issues at the mo on one plant the leaves tips are curling down and the tops of both are going yellow as you can see in the photos temps have been cold for past few nights so lights on at 21 lights off 16 for 4h using soil feed ph6 lights were 25cm 2x600w
Week 6
Leaves. Curl down
Leaves. Color - Yellow
5y ago
2
1