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
Deficiency discoloration?
GrowBrosInc
started grow question 6y ago
I noticed some light de-coloration on the tips of one of the tops. Is it just because its new growth or do I have a deficiency? Thanks for the feed back.
Solved
Week 5
Leaves. Color - Yellow
likes
Dwckanuk
answered grow question 6y ago
Looks like the start of a cal mag deficiency or a ph problem makes sure those 2 are in line and you should be fine.
1 like
Complain
Selected By The Grower
Danielerawzoni
answered grow question 6y ago
Not normal, maybe a magnesium deficit
1 like
Complain
GrowBrosInc
answered grow question 6y ago
Im doing 2 ml per gallon of Cal-Mag.
likes
Complain
Zegr8
answered grow question 6y ago
That’s not normal, could be magnesium deficiency but I can’t be sure. How much Mg are you giving to the plant? It should be between 50 and 80 ppm
1 like
Complain
Similar Grow Questions
Solved
Grileon
Iron deficiency or something else?
Hello people, is that iron deficiency? or smth else? how can I solve it? it is in day 9 or 10.
Week 1
Leaves. Color - Yellow
5y ago
5
2
Solved
Canna96
Nutrient Deficiency or something else?
Is this a nutrient deficiency in my auto? I'm Growing in Coco, feed 6X per day drain to waste, PH stays between 5.7 to 6.3. CalMag, then Maxi Bloom powder, then liquid Kool Bloom. I did cut back on the calmag at end of Veg. running a total EC of about 1400. Thanks for any help!🙏
Week 6
Leaves. Color - Yellow
6y ago
7
3
Solved
GeniusCola
Small yellow leaves
While upper leaves are growing just a little bit burned on tips, this small leaves are all yellow. Can someone advice me what to do? Should I flush it with clean water without nutes, or it doesn’t make sense? Thanks in advance :)
Leaves. Color - Yellow
5y ago
2
Solved
Fishcake
Leafs drooping down slight yellowing
Hi my plant hasn't been looking happy for a while and I just can't get her to pray 🙏 again 29/10 flushed and fed the run off was 6.55 06/11 fed 2mlgrow per litre 1.2ml cal mag per litre
Leaves. Curl down
Leaves. Color - Yellow
Feeding. Deficiences
6y ago
3
1
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
Findthelorax
Seedling light green, just want her to be happy.
Seedling is slightly yellowing. First ever hydro grow, just wondering what I should look out for. The water is ph 5.8 with fish shit, hyshield, calmag, and nutes according to seedling stage. I even added some extra plain ro water so nutes shouldn't be too strong.
Leaves. Color - Yellow
4y ago
4
5
Solved
DBQush
A bunch of different leaf symptoms appeared over just a few hours, can you spot the issue in my detailed diaries and solve the mystery?
Everything was well, until over just a few hours they developed all kinds of symptoms. I have 2 diaries here for the grow, the 2 called “Grow #2” and I am very detailed about what has been done day to day. So please have a look and see if you know what might be happening
Leaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Mottling
3y ago
2
Solved
Katalist
The yellowing continues
More and more yellowing taking place. Im worried! Buds seem to grow well tho. Im adding cal mag at the moment and ma watering less frequently. Anything else I might be doing wrong?
Week 6
Leaves. Color - Yellow
5y ago
1
3
Solved
Goodvibs
Hi all, I have had very slightly yellow tips on this plant for a while. She is mid week week 10. Two days ago the leaves started to curl and the yellow has spread slightly. Last night I flushed her with PH water and have dimmed the light slightly, anything else I can do 🤙thanks
Week 9
Leaves. Curl up
Leaves. Color - Yellow
4y ago
4
5
Solved
bellevegasj
Yellowing on GT and clawing on CB
I'm seeing an issue with Ghost Toof. The lower leaves are burning it seems. It looks like it could be a K(Potassium) issue, or possibly nutrient burn. Also, Chem Bear seems to claw quite a bit. I don't think I'm overwatering... so maybe a Nitrogen issue?
Week 4
Leaves. Curl down
Leaves. Color - Yellow
6y ago
4
3
Solved
OrganicRepresent
Yellowing leaves
Hi there i have issue with one of my girls and start similar issue with other not sure of what defiecity is it? Or underwatering? New leaves seem to have it as well. What issue can this be ? Can You help me please. Thanks.
Week 4
Leaves. Curl up
Leaves. Curl down
Leaves. Color - Yellow
6y ago
6
6
Solved
Hermes88
the plants're killing the lower leaves
They're growing BUT...the plants're killing the lower leaves.I don't understand why,this has been happening since parasites attacked them.Then when the parasites were gone and slowed for a while the leaves were dying.I put neem oil back on it (to prevent pests)and it started gain
Leaves. Color - Yellow
3y ago
6
Solved
Komar85
Nitrogen def or something else ? Ph6.5
Hi everyone I struggle with some issue I don’t know or is a nitrogen deficiency or sulffur or maybe something else. I recon that roots start poping out from pot ( 7 l ) clone from Glookies which I monster crop earlier this year . 0 nutrients added transplant 2 twice Solo-2l-7l
Leaves. Color - Yellow
5y ago
2
Solved
Gongon
Small Yellow spot at the edge of bottom fan leaf
Hi there, I spotted small yellow dots at the edge of bottom fan leaf. Plant looks healthy but this dots makes me worrie, it might be begin of something bad, so far its really small. Does my plant need more N? Or maybe it's because of LED COB light and needs cal mag?
Leaves. Color - Yellow
6y ago
2
2
Solved
Khanos
Why is my plant turning yellow?
Light distance 60 cm 600 watts. Why are the leaves turning yellow?
Week 14
Leaves. Color - Yellow
4y ago
2
2
Solved
buddhi_coop
Yellow
I’m still having issues with detecting what’s going on with my leaves. Does anyone know how I can fix this ?
Leaves. Color - Yellow
Leaves. Other
Other. General questions
5y ago
2
2
Solved
Hermes88
Help me please. Thank you so much.
Hi guys I need some help with my little plants, I have three plants one of them it's all right but the other one has this problem, I don't know if the problem is nutritional excess or nutritional deficiency, or maybe the irrigation.Instead for the topleaves look at the last phot
Leaves. Color - Yellow
Leaves. Color - Dark-brown
3y ago
2
3
Solved
confectionerbuddha
yellow Tips
is ther any huge concern about a yellow dot on one of the tips of my seedlings leaf. Im growing in organic living soil and watering with Ph 7 tap water, it is a canuk cookies auto seedling
Leaves. Color - Yellow
5y ago
4
4
Solved
GladaMinnen
Hello fellow gardners! There are some yellow/brown spots on the top of the plant leaves. The plant overall seems healthy,only 1/4 branches has this polution. Ive uploaded pictures on week9.
Week 9
Leaves. Color - Yellow
6y ago
3
3
Solved
Grow_N_Smoke
Odd growth, rusting/yellowing leaves?
6 plants same strain. Coco/perlite, noticed nutrient burn few weeks ago did 2 waterings using 1/4 strength nutes of usual. Back to usual str but a little less. One plant wilting/droopy? Some good buds on one but others not so much? What's going on here? Lower growth looks ok?
Buds. Not fattening
Leaves. Color - Yellow
Plant. Other
3y ago
2
5