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
Spots on leaves
longearringboy420
started grow question 1y ago
New grow, week 1 or 2. Just transplanted the plant 1 days ago and cut some leaves due to being too dense. Today I woke up to see these marks on the plant. What could it be ?
Open
Leaves. Color - Dark-brown
likes
Answer
John_Kramer
answered grow question 1y ago
looks like a problem with K did u feed her with Ca,Mg ? if not then it's K def
likes
Complain
Similar Grow Questions
Solved
gnlscience
Brown leaves
Hi experts. Whats could be causing the leaves turning brown on one of the smaller ones. Didn't wana share my secret but all I'm feeding them is the laundries gray water
Week 11
Leaves. Color - Dark-brown
5y ago
4
4
Solved
Kmurr07
Too late for epsom salt spray?
Is it too late to use epsom salt as a foliar spray for my potential mag def? Also unsure of how much long I actually have until chop All plants were flipped the flower the same day on April 28.
Week 9
Leaves. Color - Dark-brown
3y ago
2
Solved
Galko420
Welcher Mangel ist das?
Seit etwa 10 Tagen zeichnet sich ab, dass meine Blätter braune Flecken bekommen. Diese werden leider immer mehr und größer. Kann ich jetzt noch aktiv gegensteuern? Des Weiteren erkenne ich kleine weiße Punkte auf der blattoberfläche. Sind das Salze?
Leaves. Curl down
Leaves. White powder
Leaves. Color - Dark-brown
9mo ago
2
5
Solved
MedicineMaker
Calcium Deficiency?
Any ideas on what this could be? Water 90% RO with 10% well water 110PPM, PH 6.0-6.5, Autoflower, Day 29 of grow, Fox Farm Ocean Forest, No nutes added yet as I heard FFOF was hot for autos, plan on nutes at preflower, 20/4 schedule w/240LED 100% at 90CM, DLI 40.
Leaves. Color - Dark-brown
3y ago
2
2
Solved
CRimp
Brown spots on leaves of joung plant
Hy fellow growers. This is my first Hydro grow (DWC) its a Royal Cookie by RoyalQueen and iam feeding with Hesi Grow at the moment at 1.0 EC she is 3weeks old and i have Some problems with rust spots on the leaves. Could anyone help me out please ! Thanks a lot 🤙🏻
Leaves. Color - Dark-brown
6y ago
1
1
Solved
OrionGrowgul
Was haben meine Pflanzen?
Liebe Community, Neuling hier :) Ich habe zwei Critical Kush Auto in der 7ten Woche die seit der Blüte eine leichte Nekrose/Verfärbte Blätter haben. Leider habe ich vor 3 Tagen erst das erste mal mit Hesi Bloom gedüngt 5ml/L, vorher noch garnicht. Mehr Düngen? weniger Licht?
Leaves. Color - Pale
Leaves. Color - Dark-brown
9mo ago
2
2
Solved
BosHerbs
brown/bronze marks
Quick question, i notice some brown/bronze spots on all 3 plants. Is that a cal mag issue?
Week 3
Leaves. Color - Dark-brown
4y ago
2
3
Solved
fiadhok
Hojas manchas marron
las hojas de mis plantan han comenzado a tener manchas, me han dicho que les rocíe con jabón potásico y aceite de neem en las noches, pero cada vez avanza mas. será falta de nutrientes? algún hongo ? o quemaduras en las hojas por potasio ?
Leaves. Color - Dark-brown
Leaves. Color - Mottling
5y ago
2
1
Solved
munchiesart
Do you think this is a toxic condition, a Ph deficiency or a sign of deficiency?
My G13 showed signs of illness after my last watering. Day 105. I added İn my last irrigation 12ml Micro-6ml Grow-18ml Bloom-6ml Molasses-1.5ml Bloombastic-2ml B52 to 4 l. of water. I've kept the pH in the 6-6.5.(PPM1500) Please help me save this girl at once :( Thank you.
Leaves. Edges burnt
Leaves. Curl down
Leaves. Color - Dark-brown
4y ago
3
5
Solved
HomeGrown_Medicinal
Brown, curling leaves?
I have no idea what's happening here but the girls are showing some kind of deficiency. Browning, curling leaves. I have two 100w led lights above them and I use an organic dry fertilizer, I recently brewed a compost tea to try to get nutrients to them
Leaves. Curl down
Leaves. Color - Dark-brown
3y ago
6
6
Solved
TrustNone
Any suggestions on what you think the problem could be with #2 could be welcomed. Air pots, soil dries out 2-3 days, temps stay in same range, since sick no training was done, brown spots starting at old growth and moves up plant on big fan leaves 1st then rusty look as progress?
Week 4
Leaves. Color - Dark-brown
8y ago
2
4
Solved
sompas
Cannabis leaf symtomp
Need help Day42 what wrong with this plant
Week 6
Leaves. Color - Dark-brown
5y ago
4
Solved
Eddjack
Cosa fare?
Perche alcune foglie hanno questo aspetto? Hanno 16 giorni di fioritura .qualcuno sa dirmi cosa succede ?
Leaves. Color - Dark-brown
Leaves. Other
5y ago
4
4
Solved
EXZELENS
What kind of excess/deficiency is that?
She is now on day 16. It showed up today when I watered with 1ml of calmag, 0.5ml of fish-mix and 1ml of bio-heaven. Any info or advices would be great, thanks!
Week 2
Leaves. Tips - Burnt
Leaves. Color - Dark-brown
Leaves. Other
5y ago
2
1
Solved
Radagast_
I already posted it, but it's better to see here and it continues to spread
This appeared after a strong storm, but it doesn't stop spreading..two guys told me it's from the wind, as I assumed, but with the fact that it's spreading further, I'm worried
Leaves. Color - Dark-brown
8mo ago
1
4
Solved
aphexbg
Yellow fan leaves, brown spots on upper leaves, some curling.
Hi guys, I'm certainly having issues with my Amnesia Haze Auto feminized. At first the fan leaves on the bottom started going yellow, then after the flushing I did brown spots appeared on upper leaves. Please check the latest week of the diary and share opinions. Much Thx! <3
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
1
Solved
romi27
What kind of deficiency? What should I do? By the way, they're autos.
What kind of deficiency do I have going on here? I gave a good dose of calmag last night. The first signs were the dark spots on the leaves. Been feeding ff bloom nutes every other day, 1/4 to 1/2 strength. started from the bottom. Leaves turn yellow and then dry up.
Week 6
Leaves. Color - Yellow
Leaves. Color - Dark-brown
4y ago
3
3
Solved
burnoutdev
Light green patches on many leaves
Hey, few days before I noticed light green patches on leaves and now it's visible on more leaves. I noticed it only on large leaves now. What can be a cause of this? Also, I underwatered plant these days and maybe this can be a cause?
Leaves. Color - Dark-brown
Leaves. Other
6y ago
2
2
Solved
StudentGrower
новые листья желтеют, а на старых появится пятна и опускаются кончики
Возникли жёлтые полоски на новых листочках и коричневые пятна на старых. Но цветок в целом не выглядит больным (возраст 3 недели)
Week 2
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
1
1
Solved
CannaCookie
Plant seems to be slowly dying
My plant started to go backwards and I can’t get it revived, anyone has any idea what it could be?
Leaves. Color - Dark-brown
5y ago
2
2