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
Nute Burn?
Cannabisflakes
started grow question 5y ago
So, been growing these 4 girls, 13 weeks now. Everything for all of them are the same. Plant n#1 started to show some signs of burn leaves and curling down. Any ideas of what could be?
Solved
Leaves. Curl down
Leaves. Color - Mottling
Feeding. Other
likes
The8thChevron
answered grow question 5y ago
Looks like thrips possibly. N toxicity is possible also, but look everywhere for those little crawly bastards. Undersides of leaves especially.
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
Herikus
Leaf-tips going droopy mode
After my second to last watering the tips of all of the leaves started to droop a bit. I though it was connected to the night-cycle of my light, but it continues to worsen every day. However I only watered after the soil was dry too the touch? Is it really overwatering or else?
Leaves. Curl down
Leaves. Dropping off
Setup. Strain - Autoflowering
1y ago
7
Solved
salteeze
Starts to look a bit droopy after changing CFL to LED (Recovery ideas?)
When i used 72W CFL, it grew very well but it started to be a bit droopy after i changed to my 1200W LED. Light stress? Photoinhibition? Need some inputs on this. Nonetheless, i have changed the lights back to the CFL. How can i recover from this?
Week 3
Leaves. Curl down
Leaves. Dropping off
Plant. Wilting
5y ago
2
3
Solved
Ph0en1x
Struggle too keep Plants healthy
Hey, I really struggle with the heat. In the night, when my light Mars Hydro FC-E4800 is running currently at slightly less then 25%. My tent already reaches temperatures of 29Celsius. Though to increase the strength of my activated carbon filter, decreases my humidity too much
Leaves. Curl down
Plant. Stem - Weak
Setup. Ventilation
2mo ago
1
Solved
Wendylicious
PH
Being I use bottled water, do I have to worry about the PH? I don't check it bc of that. Do I still need to?
Feeding. Other
5y ago
1
2
Solved
Phaleg
Changing or keeping as it is ?
Hello! Based on information and media that I uploaded in my diary, should I change anything? (ex, training, pruning or similar) Thanks
Week 10
Setup. Other
Feeding. Other
Techniques. Other
3y ago
2
2
Solved
Leonard_Lunte
Light or nutrient burn?
Ive been having yellow tips on the tops of both my plants for some time now, I already raised the light up a bit higher than the maximum height the manufacturer recommends, but Im still having the yellow tops. Could this be nutrient instead of light burn?
Week 4
Leaves. Tips - Burnt
Leaves. Color - Yellow
Feeding. Other
6y ago
2
2
Solved
MarkGreenThumb
Survived, But not 100%, any Advice??!! =D
So I overwatered last week and the Leaves had some curling and Nitrogen Burns. The Leaves are less curled But more yellow, any advice would be welcomed on How to help the babbies.
Leaves. Curl down
Leaves. Color - Yellow
5y ago
1
Solved
Soter
Run off are higher in TDS and EC
Hi Guys. Week 4. My Run off are higher in TDS and EC. This is the first measurement. These are the numbers, TDS;EC;PH=Tap water:395;840;7,25. inflow=930;2000;6,4. Runoff=1319;2821;6.0 until now I haven't been feeding with runoff, and I haven't used plain PH water. what to do?
Feeding. Other
5y ago
3
3
Solved
Wackytabacky_420
Potassium or nitrogen?
So just since my update hours ago I'm noticing a decline in my pineapple auto. I have clawing tips, rust, and yellowing leaves. Happening at a rapid pace.
Week 6
Leaves. Curl down
Leaves. Color - Yellow
4y ago
4
6
Solved
MrNice666
What could be the reason
What could be the reason? everything okay suddenly on day number five weird spots?
Leaves. Color - Yellow
Leaves. Color - Mottling
Plant. Other
3y ago
2
Solved
DrGreenThumb24
Leaf issue
Got an issue with some leaves turning this colour. Anyone got any input? We are nearly 7 weeks in, growing in compost and only feeding 1ml/ltr. I’ve also attached a picture of the whole plant. Leafs at the bottom seem to be turning, the ones up top all seem a good colour.
Leaves. Color - Mottling
4y ago
2
Solved
1Right_Angle
What causes these colour smears
Jack Herer outdoors. None of my grows have presented a colour smear on the leaves, as this example shows. Left & Right of my hand shows 2 leaves with a colour smear on them. Any ideas or recommendations? Thanks Gang !!
Leaves. Color - Mottling
4y ago
2
2
Solved
rhodes68
Ok putting it out to you guys see if yall have an answer. Even at 500ppm I am getting burnt tips on the FF7. Drain to Waste once daily @10% runoff, 500ppm in 650ppm out, cant go lower as deficiencies begin. Ideas? Ignore the tips?
Week 9
Feeding. Other
6y ago
4
1
Solved
xxkilo
Overwatering or underwatering or other cause?
It's very hot in Rome (30+ degrees) and was away for a week. Got a friend to water mid-way. She gave quite a lot, 700ml. Came back after 3 days, plant was fine. Watered again and after 2 days, leaves dark and wilted. Put in direct sunlight, left for 3 days. Leaves died.
Leaves. Curl down
Leaves. Wilting
Plant. Wilting
3y ago
2
4
Solved
blindspot
Soil getting less
As everybody knows, when we watering soil, it gets more less in every watering. If I add soil when it gets less, will it be a problem ? Because I'm using Plagron Light Mix, it has fertilizer.
Other. General questions
Plant. Other
Feeding. Other
4y ago
3
3
Solved
Padrino
Looks like a claw
This girls top leafs are starting to slightly curl downward sort of like a claw? What is causing this and how do I fix it?
Week 2
Leaves. Curl down
3y ago
1
3
Solved
TripleCcannabis
Havent found any help for the issue my little girls having.. browning and drooping. Leaves are still ridged but curling up. My heat was a bit high but iv fixed that. So now @ 24C and 65 RH 24hr lights. No nutrients yet but have a very dilute 1:1:1 of the GH trio mixture.. no help
Week 1
Leaves. Curl down
Leaves. Color - Dark-brown
5y ago
3
Solved
Flyalivebeats
Why are the leaves pointing down?
Why are the leaves pointing down? For some reason today they have been down all day. I did feed as normal this morning. Could this be over feeding? Can you over water in coco?
Leaves. Curl down
3y ago
6
Solved
Beginnerbuds2020
I’m at the start of week 5 just should I start preflower nutes ?
Buds. Other
Feeding. Other
5y ago
1
3
Solved
Overgrotho
Today, I switch a few over to Professor Bruce Bugbee's soil-less mix : 50% Vermiculite 50% Peat Moss (& some gypsum and dolomite lime..) However instead of using Vermiculite I put Perlite, like an idiot!😜 Should that be fine until ready to transplant to super soil in due course?
Week 2
Feeding. Other
5y ago
3
3