The Grow Awards 2026 🏆 
Still
GMSgrowsanswered grow question 5y ago
This look like rust fungus. More ventilation, lower humidity levels, remove all infected leaves and get them out of there and burn them. Maybe do a little research. Could also just be magnesium or calcium deficiency or lock out. Cheers
Med_in_Tropicanswered grow question 5y ago
Looks like spider mite infestation. Look under the leaves.
likes
Complain
Similar Grow Questions
Solved
livetogrowgrowtolive
What kind of deficiency is that? pls helpWeek 5
Leaves. Color - Dark-brown
5y ago
2
2
Solved
Chow_13
Brown Edges on Leaf. Bit of yellow and purple.What could be causing this? And how do I fix it with GH flora series. It is only showing up on one bud site. But I believe its getting worse. I also noticed other leaves all of the jagged edges are slightly curled upWeek 16
Leaves. Color - Dark-brown
5y ago
3
Solved
GreenLiving
Browning leaves sections of leaf surface discolouredDay 18 leaf worries, browning areas, slightly metallic shine. I think from reading it might possibly be a phosphorus deficiency but I’m not certain so though I’d ask for advice.
Thank you for your time and all answers are appreciated. Have a great day!Week 2
Leaves. Color - Dark-brown
4y ago
2
1
Solved
IloveLED
What is this!?Hello there. I have, as you can see a bit of an issue regarding my plant. What is this? As you might see, the lower leaves seems ok, and that concerns me even more. I have flushed her properly and then gave her adequate amounts of feeding. At first I thought it was lack of P.Leaves. Color - Dark-brown
5y ago
2
1
Solved
PinkParrot
Brown leaves[ Lemon Orange 70% sativa ] Lot of brown leaves, starting from the tip
[ Persian pie 60% Indica ] less affected by the problem (same watering)
{ We tried }
PH 5,7 | & high PH 6,2
EC 0.9 | EC 1.2
Upper light
Cooler temp
Higher Fans speed
Note : Grow & Bloom bottles crystalized..3y ago
6
6
Solved
illegal_brain
Potential bud rot?My critical cure has some of the smaller leaves near and in the buds which are starting to turn rusty brown. Is this a starting sign of bud rot? Should I cut them early?
I do not see anything abnormal under the microscope or when separating the large buds by hand. Thanks!3y ago
8
4
Solved
Backstabbath
What deficiency is this?Can someone tell me what this is being caused by? My suspicion is a potassium/ calcium deficiency? It's affecting mostly the larger fan leaves. Also, affected leaf stems are turning purple. Posted a pic of one of the leavesWeek 6
Leaves. Color - Dark-brown
4y ago
3
Solved
Lordhyjal
Some leaves diseaseDoes anyone know what is happening to some low leaves
Look at the photo thanks!Week 3
Leaves. Color - Dark-brown
4y ago
2
2
Solved
BudahBudz2020
Hey guys can anyone tell me what this is the new growth seems fine a tad bit lighter green but the older leaves some have this please help im leaning toward a cal mag deficiency
Using bio bizz light mix
Bio grow and a few drops of root shoot
Week 4 of vegLeaves. Color - Dark-brown
Leaves. Other
Other. Bugs
5y ago
4
4
Solved
Splifflicious
Brown spots/yellow tips after accidentally breaking a bladeHi!
I accidentally broke an older blade from one of her leaves, and after a couple of days that leaf started getting brownish spots and slightly yellowing tips.
Is this normal to happen after a broken blade and will eventually die off? Or is this any sort of deficiency?
Thanks !Leaves. Tips - Die
Leaves. Color - Dark-brown
Leaves. Other
6y ago
1
1
Solved
Dylannthoo
Is 8 oz of water about right for 3 weeks old plants? Also thinking about LST, is it a good time to start that now? Also is buying nutrients worth it when it comes to harvest? Or is it more dependents on the power of the light ? Thank you for any advice 💯🙏🏼Week 3
Leaves. Color - Dark-brown
6y ago
3
3
Solved
Aliatif
What should ı do for these brown spots? Ph is ok, fertilizer is ok but didint recover. Should ı flush my plant with 6.5 ph water?Week 9
Leaves. Color - Dark-brown
7y ago
3
3
Solved
NodularStomp
Can some one tell me what this is ?
Lately there is some discoloration in some leaves of the plant.
It started at the leaf tips.
Pics are above.Week 8
Leaves. Color - Dark-brown
7y ago
3
2
Solved
5Lucky_Fingerz
Plant dieing whyI don't no what's going on... I tried flushing... Push the lights back further.... And gave them cal mag nothing fix the problem... Any suggestionsLeaves. Color - Yellow
Leaves. Color - Dark-brown
Plant. Wilting
6y ago
2
2